A, B and C can do a piece of work in 20, 30 and 60 days respectively. In how many days can A do the work if he is assisted by B and C on every third day?
Question and options
A, B and C can do a piece of work in 20, 30 and 60 days respectively. In how many days can A do the work if he is assisted by B and C on every third day?
- 12 days
- 15 days
- 16 days
- 18 days
Answer and explanation
Correct answer: B - 15 days
Rates: A = , B = , C = . In each 3-day cycle work = . So 5 cycles = 15 days.
Practice for these exams
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CUSAT CAT Five-Year LL.B.
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CUSAT CAT LLM
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