SOLUTION: A motor Boat took 4 hours to make a downstream trip with a current of 3mph. The return trip against the current the same current took 8 hours.find the speed of the boat in still wa

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Question 456881: A motor Boat took 4 hours to make a downstream trip with a current of 3mph. The return trip against the current the same current took 8 hours.find the speed of the boat in still water.
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
4(x+3)=8(x-3)
4x+12=8x-24
36=4x
x=9
The speed of the boat in still water is 9 mph..