Homework Help: math

Posted by Jaison on Tuesday, March 22, 2011 at 1:35pm.

One pump can empty a pool in 5 days, whereas a second pump can empty the pool in 7 days. How long will it take the 2 pumps, working together, to empty the pool?

math - Jaison, Tuesday, March 22, 2011 at 1:42pm
is the answer 2 11/12 days

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