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Question
If 15 men can complete a piece of work in 30 days, in how many days will 18 men complete it?
Solution
Since 15 men can complete a piece of work in = 30 days
∴ 1 man can do the work in = 30 × 15 days
∴ 18 men can do the work in =`(30xx15)/18=(5xx15)/3`
= 5 × 5 = 25 days
Hence 18 men can do the work in 25 days.
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