SOLUTION: 120 men can do a work in 90 days,how many more men required to complete the same work in 40 days?

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Question 15022: 120 men can do a work in 90 days,how many more men required to complete the same work in 40 days?
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
This problem is done in terms of man-days...
If 120 men can do it in 90 days, it takes 120 x 90 = 10800 man-days to do the job.
Thus you need 10800 man-days / 40 days = 270 men