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the current in a stream moves at a speed of 2 mph. A boat travels 8mi upstream and 8mi downstream in a total time of 7 hr. What...Asked by Vicki
The current in a stream moves at a speed of 8mph. A boat travels 13 mph up stream and 13 mph downstream with a total time of 3 hrs. What is the speed of the boat is still water?
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M, S, E,
since time = distance/speed,
13/(x-8)+13/(x+8)=3
13/(x-8)+13/(x+8)=3
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