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November 27, 2014

Homework Help: math

Posted by zshen on Tuesday, January 15, 2013 at 5:48am.

A boat travels 8km upstream and back in 2 hours. If the current flows at a constant speed of 3km/h, Find the speed of the boat in still water.(when the boat goes upstream, it speed reduces by 3km/h, and when going downstream, its speed increases by 3 km/h)

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