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Yak Sbi Clerk 2018 Coaching Solar Daytime Ii - Fourth Dimension As Well As Function (Shortcuts & Do Tests)

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Hello friends, equally simply about people are bespeak me to stimulate got gap for Compound Interest, I stimulate got decided to postpone the lesson on Compound Interest for simply about other day. Today I am sharing a uncomplicated together with of import theme 'Time together with Work' alongside shortcuts. The top dog wages of Time together with Work problems is, you lot tin easily solve them without fifty-fifty knowing the basic formulas or shortcuts. But the shortcut methods assistance us solving the problems inwards less time. Let's start today's lesson.

Time together with Work Shortcuts

Time together with Work Formulas :

1st of all you lot demand to recall the basic formula,

i.e., Work = Strength x Time

inwards Simple words, the Work done past times you lot is depends upon the amount of Strength you lot pose on that move together with the amount of Time you lot spent to produce that work.

Simple, isn't it ?

Now let's derive simply about shortcut formulas from this top dog formula.

Strength x Time = Work

If you lot ship the move to correct mitt side, together with hence it volition become,

(Strength x Time) / Work = 1

This status volition endure truthful for every case, No affair whatever the numbers are given.

 So, (SxT)/W volition endure same for all the cases.  Keep this bespeak inwards your mind.

Now lets run across simply about to a greater extent than of import weather condition :


If they laissez passer on you lot Days :
  • If Influenza A virus subtype H5N1 tin produce simply about move inwards n days, together with hence he tin produce 1/n move inwards One Day.
If they laissez passer on you lot Work :
  • If Influenza A virus subtype H5N1 tin produce 1/n move inwards One Day, he tin goal it inwards n days.
If Influenza A virus subtype H5N1 is TWICE equally expert a workman equally B :
  • This means, Influenza A virus subtype H5N1 tin produce 2 times move than B. SO,
  • The ratio of move done past times Influenza A virus subtype H5N1 together with B is 2 : 1
  • The ratio of fourth dimension taken past times Influenza A virus subtype H5N1 together with B to goal the move is 1:2
Now let's move alongside simply about models hence that you lot volition empathise better. As green I am explaining 1 occupation per model together with giving 3 problems equally homework for your practice. Solve them together with portion your answers at the comments department below.

Time & Work : Examples together with Practice Problems


Model 1 :

  1. 36 men tin produce a slice of move inwards 25 days. In how many days tin xxx men produce it ?
    1. 28
    2. 30
    3. 32
    4. 36
    5. None of these
Solution :

In this occupation the move is same for both groups of men.

So, let's equate it                   

                    (S X T) / due west = (s X t) / w
 
                  = >       (S X T) / due west = (s X t) / w    [ Cancel due west for both sides]


               Now, substitute the values...

                   = >  36 X 25  = xxx X t  

                     = >  (36 X 25) / 30  =  t  => t = 900/3  =  30

Practice Problems on Model 1 
  1. 63 Men tin produce a slice of move inwards 52 days. In how many days tin 91 men produce it ?
    1. 28
    2. 30
    3. 32
    4. 36
    5. None of these
  2. 48 Men tin produce a slice of move inwards 36 days. In how many days tin 54 men produce it ?
    1. 28
    2. 30
    3. 32
    4. 33
    5. None of these
  3. 36 Men tin produce a slice of move inwards 35 days. In how many days tin 45 men produce it ?
    1. 28
    2. 30
    3. 32
    4. 33
    5. None of these
Model 2 :
  1. 32 men tin produce a slice of move inwards xv days working for vi hours a day. In how many days volition twoscore men tin goal it if they move for 8 hours a day?
    1. 8
    2. 9
    3. 10
    4. 12
    5. None of these
Solution :

                  32 x xv x 6  = twoscore x d x 8 = 9

Practice Problems on Model 2
  1. 63 men tin produce a slice of move inwards 36 days working for vi hours a day. In how many days volition 27 men goal it if they move for vii hours a twenty-four hr menstruum ?
    1. 25
    2. 66
    3. 72
    4. 92
    5. None of these
  2. 36 Men tin produce a slice of move inwards 25 days working for vii hours a day. In how many days volition 42 men goal it if they move for vi hours per twenty-four hr menstruum ?
    1. 25
    2. 66
    3. 72
    4. 92
    5. None of these
  3. 55 Men tin produce a slice of move inwards 45 days working for 8 hours a day. In how many days volition twoscore men goal it if they move for 7.5 hours a twenty-four hr menstruum ?
    1. 25
    2. 66
    3. 72
    4. 92
    5. None of these 
Model 3 :
  1. If sixteen men tin construct a wall of 52 k long inwards 25 days working for 8 hours a day, inwards how many days tin 64 men construct a like wall of 260m long working for 10hrs a twenty-four hr menstruum ?
    1. 12
    2. 20
    3. 25
    4. 28
    5. None of these
Solution :

We already know that (Strength X Time) / Work = 1


We tin write =>


          (16 * 200) / 52  =  (64 * X * 10) / 260 


                                =>  X = 25

Practice Problems on Model 3 :
  1. If sixty men tin construct a wall of 52 k long inwards 42 days working for 8 hours a day, inwards how many days tin 35 men construct a like wall of 26 k long working for nine hours a twenty-four hr menstruum ?
    1. 32
    2. 20
    3. 25
    4. 28
    5. None of these
  2. If 36 men tin construct a wall of 51 k long inwards 45 days working for 8 hours a day, inwards how many days tin 120 men construct a like wall of 85 k long working for 7.5 hours a twenty-four hr menstruum ?
    1. 12
    2. 20
    3. 25
    4. 24
    5. None of these
  3. If 96 men tin construct a wall of 76 k long inwards 44 days working for vi hours a day, inwards how many days tin 55 men construct a like wall of 260 k long working for 8 hours a twenty-four hr menstruum ?
    1. 50
    2. 60
    3. 72
    4. 90
    5. None of these
Model 4 :
  1. A human being engaged 10 laborers to brand 320 toys inwards five days. After 3 days he constitute that exclusively 120 toys were made. How many additional men should he engage to goal the move inwards fourth dimension ?
    1. 15
    2. 20
    3. 25
    4. 30
    5. None of these
Solution : 

Here, equate the consummate move alongside the remaining work


                       (10 x 3) / 120 = (10+x) x 2 / 200 


                          = >   10+x = 25   =>   x = 15

Practice Problems on Model 4 :
  1. A human being engaged xv laborers to brand 320 toys inwards 10 days. After vii days he constitute that exclusively 175 toys were made. How many additional men should he engage to goal the move inwards fourth dimension ?
    1. 4
    2. 14
    3. 29
    4. 30
    5. None of these
  2. A human being engaged 45 laborers to brand 350 toys inwards 21 days. After xv days he constitute that exclusively 210 toys were made. How many additional men should he engage to goal the move inwards fourth dimension ?
    1. 4
    2. 14
    3. 29
    4. 30
    5. None of these
  3. A human being engaged 20 laborers to brand 360 toys inwards 20 days. After 12 days he constitute that exclusively 200 toys were made. How many additional men should he engage to goal the move inwards fourth dimension ?
    1. 4
    2. 14
    3. 29
    4. 30
    5. None of these
Model 5 :

  1. A tin produce a undertaking inwards 20 days together with B tin produce it inwards xxx days. In how many days tin they goal it if they move together ?
    1. 10
    2. 12
    3. 15
    4. 16
    5. None of these
Solution :
Influenza A virus subtype H5N1 tin produce a undertaking inwards 20 days. That agency A's 1 day's move = 1/20

Similarly, B's 1 day's move = 1/30


         => Their 1 day's move = (1/20)+(1/30)  =  (3+2)/60  =  5/60  =  1/12


               This is their 1 day's move TOGETHER.

                               So, apparently the publish of days volition endure = 12


One More Short Cut : calculate Product/Sum   =  (20 X 30) / 50 = 12 That's it ;)

Practice Problems on Model five :
  1. A tin produce a undertaking inwards sixty days together with B inwards twoscore days. In how many days tin they goal it if they move together ?
    1. 10
    2. 12
    3. 15
    4. 24
    5. None of these
  2. A tin produce a undertaking inwards 24 days together with B inwards twoscore days. In how many days tin they goal it if they move together ?
    1. 10
    2. 12
    3. 15
    4. 24
    5. None of these
  3. A tin produce a undertaking inwards 120 days together with B inwards 180 days. In how many days tin they goal it if they move together ?
    1. 60
    2. 72
    3. 90
    4. 96
    5. None of these
Model 6 :

  1. A, B together with C tin produce a undertaking inwards 20 days, xxx days together with sixty days respectively. If they move together, inwards how many days volition the move endure finished ?
    1. 9
    2. 10
    3. 12
    4. 15
    5. None of these
Solution :

          (1/20)+(1/30)+(1/60) = (3+2+1)/60  =  6/60  = 1/10


               So, the publish of days is = 10

Practice Problems on Model vi :
  1. A, B together with C tin produce a undertaking inwards twoscore days, xxx days together with sixty days respectively. If they move together, inwards how many days volition 3 such jobs endure finished ?
    1. 30
    2. 40
    3. 60
    4. 72
    5. None of these
  2. A, B together with C tin produce a undertaking inwards 20 days, xxx days together with 36 days respectively. If they move together, inwards how many days volition the move volition endure finished ?
    1. 9
    2. 10
    3. 12
    4. 15
    5. None of these
  3. A, B together with C tin produce a undertaking inwards 20 days, xxx days together with 24 days respectively. If they move together, inwards how many days volition the move endure finished ?
    1. 9
    2. 10
    3. 12
    4. 15
    5. None of these
Model 7 :
  1. Two taps Influenza A virus subtype H5N1 together with B tin fill upward a tank inwards 10 hours together with xv hours respectively. a tertiary tap C tin empty the total tank inwards 12 hours. How many hours volition endure required if all of them are opened simultaneously to fill upward inwards an empty tank completely ?
    1. 9
    2. 10
    3. 12
    4. 15
    5. None of these
Solution :

        Here, offset ii are Inlets (which tin fill upward the tank) together with the concluding 1 is Outlet (which tin empty the tank),

If in that place is Inlet use '+', if in that place is Outlet use '-'

          So,      (1/10)+(1/15)-(1/12) =  (6+4-5)/60  =  5/60  = 1/12


               So, the respond is 12

Practice Problems on Model vii :
  1. Two taps Influenza A virus subtype H5N1 together with B tin fill upward a tank inwards 20 hours together with xv hours respectively. Influenza A virus subtype H5N1 tertiary tap C tin empty the total tank inwards 12 hours. How many hours volition endure required if all of them are opened simultaneously to fill upward an empty tank completely ?
    1. 9
    2. 10
    3. 30
    4. 15
    5. None of these
  2. Two taps Influenza A virus subtype H5N1 together with B tin fill upward a tank inwards 25 min together with xv min respectively. Influenza A virus subtype H5N1 tertiary tap C tin empty the total tank inwards 10 min. How many hours volition endure required if all of them are opened simultaneously to fill upward inwards an empty tank completely ?
    1. 2
    2. 2.5
    3. 3
    4. 3.5
    5. None of these
  3. Two taps Influenza A virus subtype H5N1 together with B tin fill upward a tank inwards 24 min together with 36 min respectively. Influenza A virus subtype H5N1 tertiary tap C tin empty the total tank inwards xv mins. How many minutes volition endure required if all of them are opened simultaneously to fill upward inwards an empty tank completely ?
    1. 6
    2. 8
    3. 12
    4. 15
    5. None of these
Model 8 :
  1. A together with B tin produce a undertaking inwards 12 days. B together with C inwards xv days together with C together with Influenza A virus subtype H5N1 inwards 20 days. In how many days tin they goal it if they move TOGETHER ?
    1. 9
    2. 10
    3. 12
    4. 15
    5. None of these
Solution : 


       A+B = 12

        B+C = 15

       C+A = 20


So here,

               A+B's One day's move = >   1/ (A+B) = 1/12


              B+C's 1 day's work  =>  1/ (B+C) =  1/15


               C+A's 1 day's move = > 1/(C+A) = 1/20


              Just Add them  =>  1/( 2A+2B+2C)  =  12/60  =  1/5


                                  =>  1/2(A+B+C)  =  1/5


                                     =>1/(A+B+C)  =  1/10   [this is their 1 day's move TOGETHER]
             

                      So, they tin goal it inwards 10 days :)

Practice Problems on Model 8 :
  1. A together with B tin produce 1 tertiary of a undertaking inwards 20 days, B together with C inwards xv days together with C together with Influenza A virus subtype H5N1 inwards xxx days. In how many days tin they goal total undertaking if they move together ?
    1. 36
    2. 40
    3. 48
    4. 60
    5. None of these
  2. A together with B tin produce a undertaking inwards 27 days, B together with C inwards 45 days together with C together with Influenza A virus subtype H5N1 inwards 36 days. In how many days tin they goal 47 such jobs if they move together ?
    1. 450
    2. 480
    3. 540
    4. 600
    5. None of these
  3. A together with B tin produce a undertaking inwards sixty days, B together with C inwards ninety days together with C together with Influenza A virus subtype H5N1 inwards 100 days. In how many days tin they goal 17 such jobs if they move together ?
    1. 450
    2. 480
    3. 540
    4. 600
    5. None of these
Model 9 :
  1. A together with B tin produce a undertaking inwards 12 days. B together with C tin produce the same undertaking inwards xv days. C together with Influenza A virus subtype H5N1 inwards 20 days. In how many days tin Influenza A virus subtype H5N1 lonely goal the whole undertaking ? 
    1. 24
    2. 28
    3. 30
    4. 32
    5. None of these
Solution :

         A+B = 1/12

         B+C = 1/15

         C+A = 1/20


Here nosotros demand A, hence stimulate got a distich which is NOT HAVING A  together with subtract it from the others,


               so,  A+B-(B+C)+C+A  =  A+B-B-C+C+A =  2A  
    

But according to our Problem, 2A =  (1/12)-(1/15)+(1/20)

                                    =>A = 1/30 (this is A's 1 twenty-four hr menstruum move but nosotros demand A's total work)
                       
                                           => Influenza A virus subtype H5N1 = xxx Days
Practice Problems on Model nine :
  1. A together with B tin produce a undertaking inwards 20 days. B together with C inwards xv days together with C together with Influenza A virus subtype H5N1 inwards xxx days. In how many days tin B lonely goal the whole move inwards the higher upward occupation ?
    1. 24
    2. 28
    3. 30
    4. 32
    5. None of these
  2. A together with B tin produce a undertaking inwards 27 min. B together with C inwards 45 min together with C together with Influenza A virus subtype H5N1 inwards 36 min. In how many hours tin C lonely goal vii such jobs ?
    1. 24
    2. 28
    3. 30
    4. 18
    5. None of these
  3. A together with B tin produce a undertaking inwards sixty days, B together with C inwards ninety days together with C together with Influenza A virus subtype H5N1 inwards 100 days. In how many days tin C lonely goal the whole move ?
    1. 450
    2. 480
    3. 540
    4. 600
    5. None of these
Model 10 :
  1. A together with B tin produce a slice of move inwards 20 days. Influenza A virus subtype H5N1 lonely tin produce it inwards xxx days. In how many days tin B lonely produce it ?
    1. 40
    2. 45
    3. 50
    4. 60
    5. None of these
Solution :


    Per twenty-four hr menstruum move of Influenza A virus subtype H5N1 together with B = 1/20


         Work done past times A=  1/30


       So, B's 1 twenty-four hr menstruum move =  1/20  - 1/30  =  (3-2)/60  =  1/60 

                     =>  B's move is sixty Days


Short Cut :   Product/diff  =  600/10  =  60

Practice Problems on Model 10 :
  1. A together with B tin produce a slice of move inwards 20 days. Influenza A virus subtype H5N1 lonely tin produce it inwards 24 days. In how many days tin B lonely produce it ?
    1. 100
    2. 108
    3. 120
    4. 150
    5. None of these
  2. A together with B tin produce a slice of move inwards 20 days. Influenza A virus subtype H5N1 lonely tin produce it inwards 25 days. In how many days tin B lonely produce it ?
    1. 100
    2. 108
    3. 120
    4. 150
    5. None of these
  3. A together with B tin produce a slice of move inwards twoscore days. Influenza A virus subtype H5N1 lonely tin produce it inwards xxx days. In how many days tin B lonely produce it ?
    1. 96
    2. 120
    3. 150
    4. 180
    5. None of these
Model 11 :
  1. 10 men tin produce a undertaking inwards xv days. xv boys tin produce it inwards sixteen days. IN how many days tin five men together with 8 boys produce the same undertaking ?
    1. 10
    2. 12
    3. 15
    4. 20
    5. None of these
Solution :
Men = (10m x 15d) / five k =  xxx d
Boys = (15b x 16) / 8 = xxx d
Shortcut to Find the Ans = Product / Sum 
= (Men Days x Boy Days) / (Men Days + Boy Days)
= 900 / sixty = xv Days

To avoid confusion, let's practise simply about other occupation of same type.
  1. 20 men tin produce a undertaking inwards xv days. xv boys tin produce it inwards 25 days. In how many days tin 12 men together with five boys produce the same undertaking ?
    1. 18 3/4
    2. 24
    3. 27 5/6
    4. 30
    5. None of these
Solution :

(20 x 15) / 12 = 25

(15 x 25) / five = 75

ans = 1875 / 100 = xviii 3/4

Practice Problems on Model xi :
  1. 20 men tin produce a undertaking inwards xxx days. 45 boys tin produce it inwards 48 days. In how many days tin 25 men together with sixty boys produce the same undertaking ?
    1. 36.
    2. 5.4
    3. 6.8
    4. 7.2
    5. None of these
  2. 40 men tin produce a undertaking inwards sixty days. 50 boys tin produce it inwards 75 days. In how many days tin 100 men together with 125 boys produce the same undertaking ?
    1. 12 1/2
    2. 13 1/3
    3. 15 3/4
    4. 18 2/3
    5. None of these
Model 12 :
  1. 8 men or 12 women tin produce a undertaking inwards xxx days. In how many days tin 20 men together with xv women produce it ?
    1. 8
    2. 9
    3. 10
    4. 12
    5. None of these
Solution :
(8 yard x xxx D) / 20 = 12 D
(12W x 30D) / xv = 24 D
=> 288 / 36 = 8
Practice Problems on Model 12 :
  1. 18 men or xxx boys tin produce a undertaking inwards xxx days. In how many days tin 24 men together with twoscore boys produce it ?
    1. 10
    2. 11 1/4 
    3. 12 1/2
    4. 15 3/4
    5. None of these
  2. 28 men or 32 women tin produce a undertaking inwards 45 days. In how many days tin 20 men together with 20 women produce it ?
    1. 23.2
    2. 24.8
    3. 28.4
    4. 33.6
    5. None of these
  3. 50 men or sixty women tin produce a undertaking inwards xxx days. In how many days tin 45 men together with 36 women produce it ?
    1. 15
    2. 18
    3. 20
    4. 24
    5. None of these
Model 13 :
  1. A tin produce a undertaking inwards 12 days together with B inwards xv days. Influenza A virus subtype H5N1 industrial plant for 4 days together with and hence B industrial plant to goal it. For how many days does B move ?
    1. 8
    2. 9
    3. 10
    4. 12
    5. None of these 
Solution :
A's per twenty-four hr menstruum move = 1/12
He worked inwards 4 days = 4/12 = 1/3
So B's remaining move = 2/3 x xv = 10
2nd Shortcut Method : 

Attendance of Influenza A virus subtype H5N1 / Full move fourth dimension = 4/12 =1/3 + x/15  = 1

=> x/15 = 1 - 1/3 = 2/3

=> x = 10

Practice Problems on Model xiii : 
  1.  A tin produce a undertaking inwards xxx days together with B inwards twoscore days. Influenza A virus subtype H5N1 industrial plant for vi days together with and hence B industrial plant to goal it. For how many days does B move ?
    1. 24
    2. 28
    3. 32
    4. 36
    5. None of these 
  2. A tin produce a undertaking inwards 25 days together with B inwards xxx days. Influenza A virus subtype H5N1 industrial plant for 10 days together with and hence B industrial plant to goal it. For how many days does B move ?
    1. 12
    2. 18
    3. 20
    4. 21
    5. None of these
  3. A tin produce a undertaking inwards lxx days together with B inwards 50 days. Influenza A virus subtype H5N1 industrial plant for 21 days together with and hence B industrial plant to goal it. For how many days does B move ?
    1. 32
    2. 42
    3. 28
    4. 35
    5. None of these
Model 14 :  
  1. A tin produce a undertaking inwards 24 days. He worked for vi days together with and hence B completed it inwards 27 days. In how many days tin B lonely goal the whole undertaking ?
    1. 32
    2. 36
    3. 40
    4. 42
    5. None of these
Solution :

Attendance / Full move = 6/24 = 1/4

6/24 + 27/x = 1

27/x = 3/4 = 36

Practice Problems on Model xiv :
  1. A tin produce a undertaking inwards xxx days. He worked for 8 days together with and hence B completed it inwards 33 days. In how many days tin B lonely goal the whole undertaking ?
    1. 32
    2. 36
    3. 40
    4. 45
    5. None of these 
  2. A tin produce a undertaking inwards sixty days. He worked for 24 days together with and hence B completed it inwards 45 days. In how many days tin B lonely goal the whole undertaking ?
    1. 60
    2. 75
    3. 80
    4. 90
    5. None of these 
  3. A tin produce a undertaking inwards sixty days. He worked for 22 days together with and hence B completed it inwards 57 days. In how many days tin B lonely goal the whole undertaking ?
    1. 60
    2. 75
    3. 80
    4. 90
    5. None of these
Model 15 : 
  1. Influenza A virus subtype H5N1 together with B tin produce a undertaking inwards 10 days together with 12 days respectively. They move together for 3 days together with and hence B leaves. In how many days volition the residuum of the move endure finished ?
    1.  4
    2. 5
    3. 6
    4. 7.5
    5. None of these 
Solution :
A's attendance =  3+x / 10
B's attendance =  3/12
=> 3+x/10 + 3/12 = 1
=> x = 4 1/2
Practice Problems on Model xv :
  1.  A together with B tin produce a undertaking inwards xxx days together with 45 days respectively. They move together for 8 days together with and hence Influenza A virus subtype H5N1 leaves. In how many days volition the residuum of the move endure finished ?
    1. 33
    2. 30
    3. 25
    4. 24
    5. None of these 
  2. A together with B tin produce a undertaking inwards 45 days together with twoscore days respectively. They move together for sixteen days together with and hence B leaves. In how many days volition the residuum of the move endure finished ?
    1. 11
    2. 12
    3. 15
    4. 17
    5. None of these 
  3. A together with B tin produce a undertaking inwards ninety days together with 108 days respectively. They move together for 20 days together with and hence B leaves. In how many days volition the residuum of the move endure finished ?
    1. 50
    2. 56
    3. 60
    4. 64
    5. None of these
Model 16 :
  1. A together with B tin produce a undertaking inwards xv days together with 20 days respectively. They start the move together together with vi days earlier the completion of the move Influenza A virus subtype H5N1 leaves. In how many days is the total move finished ?
    1. 6
    2. 9
    3. 12
    4. 15
    5. None of these 
 Solution :

x-6/15 + x/20 = 1

= (4x- 24 + 3x) / sixty = 1

=> 7x- 24 = 60

7x = 84
=> x = 12
Practice Problems on Model sixteen :
  1. A together with B tin produce a undertaking inwards 25 days together with xv days respectively. They start the move together together with 1 twenty-four hr menstruum earlier the completion of the move B leaves. In how many days is the total move finished ?
    1. 6
    2. 9
    3. 10
    4. 15
    5. None of these 
  2. A together with B tin produce a undertaking inwards 36 days together with 45 days respectively. They start the move together together with nine days earlier the completion of the move Influenza A virus subtype H5N1 leaves. IN how many days is the total move finished ?
    1. 16
    2. 20
    3. 24
    4. 25
    5. None of these 
  3. A together with B tin produce a undertaking inwards 28 days together with 42 days respectively. They start the move together together with 8 days earlier the completion of the move B leaves. In how many days is the total move finished ?
    1. 16
    2. 20
    3. 24
    4. 25
    5. None of these 
Model 17 :
  1. 15 men tin produce a undertaking inwards 12 days together with 20 women tin produce it inwards 10 days. What is the ratio betwixt the capacities of a human being together with a adult woman ?
    1. 9 : 8
    2. 11 : 10
    3. 10 : 9
    4. 7 : 5
    5. None of these 
Solution :
Work = Strength x Time 
=> 180 MD = 200 WD   

=> 180 yard = 200 W

=> 9M = 10W     [This means, 10 Women tin produce nine Men's work]

So, M : due west = 10 : 9   [Shortcut : Just interchange the numbers to stand upward for the ratios]

Practice Problems on Model 17 :
  1. 20 men tin produce a undertaking inwards 12 days together with xxx women tin produce it inwards nine daus. What is the ratio betwixt the capacities of a human being together with a adult woman ?
    1. 9 : 8
    2. 11 : 10
    3. 10 : 9
    4. 7 : 5
    5. None of these 
  2. 50 men tin produce a undertaking inwards 10 days together with 20 women tin produce it inwards 35 days. What is the ratio betwixt the capacities of a human being together with a adult woman ?
    1. 9 : 8
    2. 11 : 10
    3. 10 : 9
    4. 7 : 5
    5. None of these 
  3. 15 men tin produce a undertaking inwards twoscore days together with 20 women tin produce it inwards 33 days. What is the ratio betwixt the capacities of a human being together with a adult woman ?
    1. 9 : 8
    2. 11 : 10
    3. 10 : 9
    4. 7 : 5
    5. None of these
Model 18 :
  1. 18 men tin produce a undertaking inwards xxx days. After vi days, vi men left. In how many days volition the remaining move endure completed ?
    1. 32
    2. 44
    3. 33 3/4
    4. 40
    5. None of these 
Solution :

Shortcut : Time = Remaining Work / Remaining strength 

= 18m x 24d / 12 mm 

= 36d  
Practice Problems on Model xviii :
  1. 18 men tin produce a undertaking inwards xxx days. After 8 days, nine men left . In how many days volition the remaining move endure completed ?
    1. 32
    2. 44
    3. 33 3/4
    4. 40
    5. None of these 
  2. 28 men tin produce a undertaking inwards xxx days. After vi days, vii men left. In how many days volition the remaining move endure completed ?
    1. 32
    2. 44
    3. 33 3/4
    4. 40
    5. None of these 
  3. 45 men tin produce a undertaking inwards twoscore days. After 10 days, five men joined. In how many days volition the residuum of the move endure finished ?
    1. 32
    2. 44
    3. 33  3/4
    4. 40
    5. None of these
Model 19 :
  1.  A is twice equally expert a workman equally B together with together they goal a move inwards 12 days. In how many days tin Influenza A virus subtype H5N1 lonely produce it ?
    1. 30
    2. 36
    3. 20
    4. 18
    5. None of these 
Solution :

Given that, Influenza A virus subtype H5N1 is twice equally expert a workman equally B. 

So let's assume Strength of Influenza A virus subtype H5N1 is 2 together with the Strength of B is 1
Together they goal the move inwards 12 days. 
=> A+B = 2+1 = 3 -> 12
=>  A's move volition endure = 3/2 x 12 = xviii days

Practice Problems of Model nineteen :
  1. A is one-half expert a workman equally B together with together they goal a move inwards 12 days. In how many days tin a Influenza A virus subtype H5N1 lonely produce it ?
    1.  30
    2. 36
    3. 20
    4. 18
    5. None of these
  2. A is 1 1/2 times equally expert a workman equally B together with together they goal a move inwards 12 days. In how many days tin B lonely produce it ?
    1. 30
    2. 36
    3. 20
    4. 18
    5. None of these 
  3. A is 4/5th equally expert a workman equally B together with B lonely tin goal a move inwards 36 days. In how many days tin Influenza A virus subtype H5N1 together with B both tin produce it ?
    1. 30
    2. 36
    3. 20
    4. 18
    5. None of these
Work alongside these models together with solve the given practise problems. Share your solutions inwards the comments department below. Will post service to a greater extent than shortcuts together with Practice problems tomorrow. All the Best :)
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