Homework Help: Algebra

Posted by Tina on Sunday, November 27, 2011 at 5:57pm.

Sue can shovel snow from her driveway in 45 minutes. Jim can do the same job in 55 minutes. How long would it take them if they worked together?

Algebra - Henry, Monday, November 28, 2011 at 7:34pm
T = t1*t2 / (t1+t2),
T = 45*55 / (45+55) = 24.75Min.

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