SOLUTION: Suppose that 5 workers can complete a certain task in 12 days. If there are 15 workers, how many days would it take for them to finish the same task?

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Question 690681: Suppose that 5 workers can complete a certain task in 12 days. If there are 15 workers, how many days would it take for them to finish the same task?

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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Suppose that 5 workers can complete a certain task in 12 days.
Find the number of man-days to complete
5 * 12 = 60 man-days
;
If there are 15 workers, how many days would it take for them to finish the same task?
let d = number of days required if there are 15 men
15d = 60
d = 60/15
d = 4 days for 15 men to do the job