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A man can swim with a speed of 3 m/s in still water. He crosses a river of width 100 m by swimming in the direction that will take him across in the smallest possible time. When he reaches the opposite shore, he has been swept 50 m downstream. How fast is the river flowing?
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A man can swim with a speed of 3 m/s in still water. He crosses a river of width 100 m by swimming i...
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