SOLUTION: A motorboat can travel 15 miles per hour downstream and 9 miles per hour upstream on a certain river. Find the rate of its current and the rate at which the boat can travel in stil
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Question 789327: A motorboat can travel 15 miles per hour downstream and 9 miles per hour upstream on a certain river. Find the rate of its current and the rate at which the boat can travel in still water. Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! A motorboat can travel 15 miles per hour downstream and 9 miles per hour upstream on a certain river. Find the rate of its current and the rate at which the boat can travel in still water.
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The boat's speed is the average
= (15+9)/2
= 12 mi/hr
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The current is the difference
15 - 12 = 3 mi/hr
