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A boat travels upstream from Point A to Point B in 7 hours. The return trip takes only 3.5 hours because the boat travels 3 miles per hour faster downstream due to the current. …

A boat travels upstream from Point A to Point B in 7 hours. The return trip takes only 3.5 hours because the boat travels 3 miles per hour faster downstream due to the current. …
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A boat travels upstream from Point A to Point B in 7 hours. The return trip takes only 3.5 hours because the boat travels 3 miles per hour faster downstream due to the current. How far does the boat travel upstream?

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User James Irwin
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because the boat travels the distance twice as fast when going 3 three miles/hour faster the original speed must be 3 miles/hour. so the distance upstream would be 21 miles/hour.
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User Tom Eustace
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