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18 men can reap a field in 35 days. For ...

18 men can reap a field in 35 days. For reaping the same field in 15 days, how many men are required?

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18 men can reap a field in 35 days.
Let, number of men be `x`.
we know, `k=xy`
`35xx18=15xxx`
`x= (35xx18)/15`
`x=42` men
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