SOLUTION: A piece of work is done in 15days by 24men, how long will it take 9men to do it, if working at thesame rate? How long wil it take 1 man to do it ?

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Question 717528: A piece of work is done in 15days by 24men, how long will it take 9men to do it, if working at thesame rate? How long wil it take 1 man to do it ?
Answer by josgarithmetic(39838) About Me  (Show Source):
You can put this solution on YOUR website!
Best is assume the rate of each man is additive in the group. Each man does 1/24 the rate of the whole group. For one man to do the work alone, he would need 15%2A24=360 days.

A bit more,
Since the rate of one man is 1 job in 360 days, or 1/360, if 9 men do the work, their rate is 9%2A%281%2F360%29=1%2F40 jobs per day, or 40 days to do the job.