Arithmetic Aptitudes › Time and Work › Question #4621
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QIf A and B can complete a piece of work in 12 days, B and C can do it in 20 days, and C and A can do it in 15 days, how long would it take A, B, and C to finish it together?

ID: #4621 Time and Work 165 views
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#4621Q ID
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Time and WorkTopic
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  • A 4 ✔ ✖
  • B 7 ✔ ✖
  • C 10 ✔ ✖
  • D 15 ✔ ✖
Correct Answer

Explanation

The total amount of work that A, B, and C can complete in 1 day is (A+B+C) 1 days work = 1/10.
This means that in 10 days, they will be able to complete 10 * (A+B+C) 1 days work = 10 * (1/10) = 1 unit of work.
Since we know that the task requires 1 unit of work to be completed, this means that A, B, and C will be able to complete the task in 10 days.

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