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Mathematics

Time And Work MCQs

Practice Time And Work MCQs for competitive exams.

Time And Work MCQs

Practice questions from this topic.

A takes 4 times as much time as B or 5 times as much time as C to finish a piece of work. Working together, they can finish the work in 4 days. B can do the work alone in:

  1. A. 10 days
  2. B. 15 days
  3. C. 12 days
  4. D. 20 days
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Naman does half the work as Gagan in 4/5 the time. If together they take 16 days to complete a piece of work, then how long will it take Gagan to complete the work?

  1. A. 23 days
  2. B. 24 days
  3. C. 25 days
  4. D. 26 days
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Antony and Vikas together can complete a piece of work in 20 days and Vikas alone can complete it in 25 days, In how many days can Antony alone complete the same work?

  1. A. 90 days
  2. B. 80 days
  3. C. 100 days
  4. D. 110 days
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A, B and C can do a piece of work in 11 days, 20 days and 55 days respectively. If B works daily and is supported by A and C on alternate days beginning with A, then in how many days will the work be finished?

  1. A. 10
  2. B. $$9frac{1}{3}$$
  3. C. 12
  4. D. 8
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A is thrice as good a workman as B. C alone takes 48 days to paint a house. All three A, B and C working together take 16 days to paint the house. It will take how many days for B alone to paint the house?

  1. A. 32
  2. B. 64
  3. C. 96
  4. D. 72
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A and B can do a work together in 18 days. A is three time as efficient as B. In how many days can B alone complete the work?

  1. A. 60 days
  2. B. 72 days
  3. C. 54 days
  4. D. 64 days
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A alone can do a work in 14 days. B alone can do the same work in 28 days. C alone can do the same work in 56 days. They start the work together and completed the work such that B was not working on last 2 days and A did not work in last 3 days. In how many days (total) was the work completed?

  1. A. $$frac{{72}}{7}$$
  2. B. $$frac{{79}}{7}$$
  3. C. $$frac{{65}}{7}$$
  4. D. $$frac{{82}}{7}$$
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P can work thrice as fast as Q working independently, can complete a task in 24 days. In how many days can P and Q together finish the same task?

  1. A. 5
  2. B. 4
  3. C. 6
  4. D. 8
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X can do a work in 3 days, Y does three times the same work in 8 days, and Z does five times the same work in 12 days. If they have to work together for 6 hours in a day, then in how much time can they complete the work?

  1. A. 4 hours
  2. B. 5 hours 20 minutes
  3. C. 4 hours 10 minutes
  4. D. 5 hours
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The ratio of the efficiencies of A, B and C is 7 : 5 : 8. Working together, they can complete a piece of work in 42 days. B and C worked together for 21 days and the remaining work was completed by A alone. The whole work was completed in:

  1. A. 96 days
  2. B. 99 days
  3. C. 102 days
  4. D. 93 days
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A alone can do a work in 11 days. B alone can do the same work in 22 days. C alone can do the same work in 33 days. They work in the following manner: Day 1: A and B work. Day 2: B and C work. Day 3: C and A work. Day 4: A and B work. And so on. In how many days will the work be completed?

  1. A. 3 days
  2. B. 12 days
  3. C. 6 days
  4. D. 9 days
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A and B undertake a contract of a task for Rs. 10,800. A and B can complete the task in 45 days and 60 days, respectively. However, to finish the work early, they take C's help and complete the entire work in 20 days. What is the value (in Rs.) of (a - b + 2c), where a, b and c are the shares of A, B and C, respectively, for their contribution to complete the task?

  1. A. 3000
  2. B. 6000
  3. C. 4000
  4. D. 8000
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