SOLUTION: A boat has a speed of 15 mph in still water. It travels downstream from Greentown to Glenavon in g hours. It then goes back upstream from Glenavon to Cambria, which is 2 miles down

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Question 1127422: A boat has a speed of 15 mph in still water. It travels downstream from Greentown to Glenavon in g hours. It then goes back upstream from Glenavon to Cambria, which is 2 miles downstream from Greentown, in g hours. Find the rate of the current.
Answer by ikleyn(52847)   (Show Source): You can put this solution on YOUR website!
.
The distance from Greentown to Glenavon is  D1 = g*(15+x) miles downstream.


The distance from Glenavon to Cambria is  D2 = g*(15-x)  miles upstream.


The difference D1 - D2 is 2 miles, according to the condition.


It gives you an equation


g*(15+x) - g*(15-x) = 2,


which you can easily solve and find "x", the rate of the current.


x =  miles per hour.

Solved.


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