Time and work Practice Question and Answer

Q: A, B and C together can do a work in 8 days if A and B can do it in 20 and 30 days respectively. In how many days C alone can complete it? 4426 2

  • 1
    16
    Correct
    Wrong
  • 2
    18
    Correct
    Wrong
  • 3
    20
    Correct
    Wrong
  • 4
    24
    Correct
    Wrong
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Answer : 4. "24"

Q: P takes 5 more hours to complete a work in comparison to Q. They work together for 6 hours. In how many days can Q complete the same work. 2998 1

  • 1
    8 hours
    Correct
    Wrong
  • 2
    10 hours
    Correct
    Wrong
  • 3
    12 hours
    Correct
    Wrong
  • 4
    15 hours
    Correct
    Wrong
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Answer : 4. "15 hours"

Q:

A can do a piece of work in 20 days and B in 30 days. They work together for 7 days and then both leave the work.  Then C alone finishes the remaining work in 10 days. In how many days will C finish the full work?

1393 0

  • 1
    25 days
    Correct
    Wrong
  • 2
    30 days
    Correct
    Wrong
  • 3
    24 days
    Correct
    Wrong
  • 4
    20 days
    Correct
    Wrong
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Answer : 3. "24 days"

Q: A can do a piece of work in 6 days and B in 9 days. How many days will both take together to complete the work? 1740 0

  • 1
    7.5 days
    Correct
    Wrong
  • 2
    5.4 days
    Correct
    Wrong
  • 3
    3.6 days
    Correct
    Wrong
  • 4
    3 days
    Correct
    Wrong
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Answer : 3. " 3.6 days"

Q: A can cultivate $${2\over 5}$$ of a land in 6 days and b can cultivate $${1\over 6}$$ of the same land in 10 days. Working together A and B can cultivate $${4\over 5}$$ of the land in; 1780 0

  • 1
    4 days
    Correct
    Wrong
  • 2
    5 days
    Correct
    Wrong
  • 3
    8 days
    Correct
    Wrong
  • 4
    10 days
    Correct
    Wrong
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Answer : 3. " 8 days"

Q: A and B can do a piece of work in 72 days. B and C can do it in 120 days. A and C can do it in 90 days. In how many days all three together can do the work ? 1698 0

  • 1
    80 days
    Correct
    Wrong
  • 2
    100 days
    Correct
    Wrong
  • 3
    60 days
    Correct
    Wrong
  • 4
    150 days
    Correct
    Wrong
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Answer : 3. " 60 days"

Q: A, B and C can complete a work in 10, 15 and 20 days respectively. A and B start it together. B is replaced by C after 2 days. A leave it after one more day. In how many days work was completed? 3028 0

  • 1
    13
    Correct
    Wrong
  • 2
    \(13 {1 \over 13 }\)
    Correct
    Wrong
  • 3
    \(18 {4 \over 3 }\)
    Correct
    Wrong
  • 4
    18
    Correct
    Wrong
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Answer : 2. " \(13 {1 \over 13 }\)"

Q:

A, B and C can complete a piece of work in 10, 12, and 15 days respectively, They started the work together. But A left the work before 5 days of its completion. B also left the work 2 days after A left. In how many days was the work completed?

1524 0

  • 1
    4 days
    Correct
    Wrong
  • 2
    5 days
    Correct
    Wrong
  • 3
    7 days
    Correct
    Wrong
  • 4
    8 days
    Correct
    Wrong
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Answer : 3. "7 days"

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