SOLUTION: the rate of the current in a stream is 3 mph. Amys boat can go 36 miles downstream in the same time it takes to go 24 miles upstream. find the rate of her boat in still water

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Question 438138: the rate of the current in a stream is 3 mph. Amys boat can go 36 miles downstream in the same time it takes to go 24 miles upstream. find the rate of her boat in still water
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
36/x+3=24/x-3
36(x-3)=24(x+3)
36x-108=24x+72
12x=180
x=15.
The boat in still water goes 15mph.