Mathematics, 22.09.2021 08:20 hncriciacheichi
The current in a stream flows at a rate of 4 mph. A boat travels 9 miles upstream and 9 miles down stream in a total time of 3 hours. what is the speed of boat in still water ?
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The current in a stream flows at a rate of 4 mph. A boat travels 9 miles upstream and 9 miles down s...
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