Question 34

7 men can do a piece of work in 16 days. The number of men required to do double the work in 8 days is

Solution

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The work takes $$7 \times 16 = 112$$ man-days, so double the work takes 224 man-days. To finish in 8 days, $$\frac{224}{8} = 28$$ men are needed.

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