Homework Help: algebra

Posted by Anonymous on Tuesday, November 9, 2010 at 2:46pm.

A boat traveling on the Snake River travels 24 miles upstream in 3 hours. The return trip takes the boat only 2 hours. Find the rate of the boat in still water.

algebra - Henry, Wednesday, November 10, 2010 at 7:44pm
V1 = d/t = 24 / 3 = 8 mi/h.

V2 = 24 / 2 = 12 mi/h.

Vavg = (V1 + V2) / 2 = (8 + 12) / 2 = 10 mi/h = speed in still water.

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