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 Two men and three women working 7 hours a day finish a work in 5 days. Four men and four women working 3 hours a day complete the work in 7 days. The number of days in which only 7 men working 4 hours

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 Two men and three women working 7 hours a day finish a work in 5 days. Four men and four women working 3 hours a day complete the work in 7 days. The number of days in which only 7 men working 4 hours

A). 5 days

B). 6 days

C). 7 days

D). 10 days


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Answered by on | Votes 1 |

5 days



2M + 3W ----- 35 h

4M + 4W ------- 21 h

7M -------? d

70M + 105W = 84M +84M

21W = 14M => 2M = 3W

4 * 35 = 7 * x => x = 20 hours

20/4 = 5 days

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