If the water in the river is flowing at 3.0 ms explain how, Ask an Expert

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A boat moves through a river at 8.0 m/s relative to the water, regardless of the boat's direction. If the water in the river is flowing at 3.0 m/s, how long does it take the boat to make a round trip consisting of a 250 m displacement downstream followed by a 250 m displacement upstream?

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