November 28, 2015

Homework Help: math

Posted by Anonymous on Wednesday, June 11, 2008 at 7:36pm.

if Steven can mix 20 drinks in 5 minutes, Sue can mix 20 drinks in 10 minutes, and Jack can mix 20 drinks in 15 minutes, how much time will it take all 3 of them working together to mix the 20 drinks?

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