SOLUTION: A motorboat takes 5 hours to travel 450 mi going upstream. The return trip takes 3 hours going downstream. What is the rate of the boat in still water and what is the rate of the c

Question 580738: A motorboat takes 5 hours to travel 450 mi going upstream. The return trip takes 3 hours going downstream. What is the rate of the boat in still water and what is the rate of the current?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
A motorboat takes 5 hours to travel 450 mi going upstream. The return trip takes 3 hours going downstream. What is the rate of the boat in still water and what is the rate of the current?
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450/5 = 90 mi/hr
450/3 = 150 mi/hr
The boat's speed is the average = (90 + 150)/2 = 120 mi/hr
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The current is the difference = 150-120 = 30 mi/hr

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