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A person can row 7.5 km an hour in still water and he finds that it takes him twice as long to row up as to row down the river. The speed of the stream is ?

Correct Answer: 2.5 km/hr

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Math MCQ: A person can row 7.5 km an hour in still water and he finds that it takes him twice as long to row up as to row down the river. The speed of the stream is ? | Extra Education