SOLUTION: If 6 men can do a piece of work in 14 days, how many men are needed to do the work in 21 days?

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Question 770858: If 6 men can do a piece of work in 14 days, how many men are needed to do the work in 21 days?
Answer by solver91311(24713) About Me  (Show Source):
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If 6 men can do the work in 14 days, 1 man can do 1/6 of the work in 14 days, so it would take 1 man 84 days to complete the whole job. But then 2 men could do the whole job in 42 days, and 4 men could do it in 21 days.

John

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