SOLUTION: on a certain river, a paddleboat travels 10 miles upstream(against the current) in the same amount of time it travels 30 miles downstream(with the current). If the current of the r
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Question 1040412: on a certain river, a paddleboat travels 10 miles upstream(against the current) in the same amount of time it travels 30 miles downstream(with the current). If the current of the river is 5 miles per hour, determine the speed
Answer by jorel555(1290) (Show Source): You can put this solution on YOUR website!
Let r be the paddleboat's speed in still water. Then:
30/r+5=10/r-5
30r-150=10r+50
20r=200
r=10
The paddleboat travels 10 mph in still water ☺☺☺
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