SOLUTION: A boat glides downstream for 12 hours. Because the stream's current, it takes the boat 22 hours to go back upstream. If the speed of the river is 5mph, find the speed of the boat i

Question 1006736: A boat glides downstream for 12 hours. Because the stream's current, it takes the boat 22 hours to go back upstream. If the speed of the river is 5mph, find the speed of the boat in still water.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = distance in mi that boat drifts downstream
is also the distance the boat goes back upstream
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The speed of the river is mi/hr

hrs

mi
--------------
Going back upstream,
let = the speed of the boat in mi/hr in still water
= the speed of the boat going upstream

The speed of the boat in still water is 7.727 mi/hr
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