SOLUTION: if it takes 7 people 15 days to do a job, how long will it take 3 people to do the same job.

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Question 522803: if it takes 7 people 15 days to do a job, how long will it take 3 people to do the same job.
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
If it takes 7 people 15 days to do a job, how long will it take 3 people to do the same job.
:
Find the number of man-days to do the job: 7 * 15 = 105 man-days to do the job
:
Let d = number of days required for 3 men to do the job
3d = 105
d = 105/3
d = 35 days for 3 men to do it.