Question
A and B together can complete a piece of work in 10
days. A alone can complete it in 15 days. In how many days can B alone complete the work?Solution
(A + B)’s 1-day work = 1/10 A’s 1-day work = 1/15 B’s 1-day work = 1/10 − 1/15 = (3 − 2) / 30 = 1/30 So B alone will take 30 days. Answer: 30 days
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