Question

24 men working at 8 hours per day can do a piece of work in 15 days. In how many days
can 20 men working at 9 hours per day can complete the same work ?
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Answer 1

24 men working 8 hours per day can do a work in 15 days. So, 24 men working at 8 hours per day can do 2880 units of work in 15 days. So, 20 men working at 9 hours per day do the same work in 16 days.

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