Question 180565: The Hudson River flows at a rate of 5 miles per hour. A patrol boat travels 40 miles upriver and returns in a total time of 6 hours. What's the speed of the boat in still water? Answer by HyperBrain(694) (Show Source):
r=-5/3>>Not valid since the rate of the boat must be positive.
Therefore, the boat travels 15 mi/hr in still water.
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