SOLUTION: April's boat can travel 11 miles downstream in the same amount of time it can travel 9 miles upstream. If the speed of her boat in still water is 20 mph, find the speed of the curr

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Question 806927: April's boat can travel 11 miles downstream in the same amount of time it can travel 9 miles upstream. If the speed of her boat in still water is 20 mph, find the speed of the current.

Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
(20-c)*t=9,
(20+c)*t=11
c = 2, t = 1/2