SOLUTION: A boat traveled 108 miles downstream and back. The trip downstream took 4 hours and the trip back took 12 hours. What's the speed of the boat in still water and the speed of the

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Question 932631: A boat traveled 108 miles downstream and back. The trip downstream took 4 hours and the trip back took 12 hours. What's the speed of the boat in still water and the speed of the current?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
r + c = 27mph 108mi%2F%284hr%29
r - c = 9mph 108mi%2F%2812hr%29
2r = 36mph
r = 18mph
c = 9mph 27-18