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40 men can do a piece of work in 10 days. Find the time required by 25 men to do double the work.

1. 28 Days
2. 30 Days
3. 32 Days
4. 36 Days

Correct answer: 32 Days

Solution

40 men working for 10 days complete one job, so total work = 400 man-days. Double the work = 800 man-days. With 25 men, time required = \(800/25 = 32\) days.

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