SOLUTION: Q1 ) 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 days do the same work.

Question 248941: Q1 ) 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 days do the same work.

Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
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 days do the same work.
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The job takes 24 men x 8 hrs/day x 15 days = 2880 man-hours
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2880 man-hours/(20 men x 9 hours/day) = 16 days
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Another method:
15 days * 24/20 * 8/9 = 16 days
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