A certain number of men could complete work in 40 days. If there were 20 men more the work could be completed in 20 days. The original number of men is
Correct answer D. 20
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Time and Work MCQs
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- Numbers 104
- Percentage 103
- Age Questions 95
- Profit and Loss 82
- Ratio and Proportion 80
- Time and Work 73
- Alligation or Mixture 73
- Fraction and Decimal 72
- Compound Interest 71
- Simple Interest 69
- Area 64
- Volume and Surface Area 64
- Equations and Inequalities 64
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- Partnership 56
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- Probability 45
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- Height and Distance 37
- True Discount 36
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- Boats and Streams 34
- Banker's Discount 32
- Counting 32
- Logarithm 30
- Problems on H.C.F and L.C.M 30
- Calendar 30
- Road Problems 26
- Word Problems 25
- Men and Food 24
Ahmar works twice as fast as Bina. If Bina can complete a work in 30 days the number of days taken by Ahmar and Bina to complete the work working together is
Correct answer D. 10 days
X can do a job in 16 days Y can do the same job in 20 days X Y and Z can do the job in 7.5 days. Alone Z can do the same job in
Correct answer D. 48 days
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Asghar can do a job in 60 days. And both Asghar and Babar can do the same job in 20 days working together. Babar alonge can do the some job in
Correct answer A. 30 days
Alia can complete an assignment in 5 days and Babar can complete the same assignment is 20 days. The time taken by both Alia and Babar to complete the assignment working together is
Correct answer C. 4 days
If A can do a job in 10 days another person B can do the same job in 20 days then time required to do the job when both of them working todether.
Correct answer D. 20?3
If As 1 days work = 1/20 then time required to finish the job (in days)
Correct answer A. 20
If A can do a piece of work in 10 days then part of work done by him in one day.
Correct answer C. 1?10
An inlet pipe can fill a tank in 10 hrs and an outlet pipe empties the same full tank in 20 hrs. The time required to fill the tank when both pipes are opened.
Correct answer B. 20
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If an outlet pipe empties a full tank in 20 hrs then part of tank emptied in one hour.
Correct answer D. 1?20
If an inlet pipe fills a tank in 10 hrs and another inlet pipe fills the same tank in 5 hrs then time required to fill the tank when both pipes are opened.
Correct answer A. 10?3
If part of tank filled in one hour = 1/10 then time required to fill the tank.
Correct answer C. 10
If an inlet pipe fills a tank in 10 hrs then part of tank filled in 1 hr.
Correct answer B. 1?10