A motorboat heads upstream on a river that has a current of 3 miles per hour. The
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A motorboat heads upstream on a river that has a current of 3 miles per hour. The trip upstream takes 5 hours, and the return trip takes 2.5 hours. What is the speed of the motorboat? (Assume that the boat maintains a constant speed relative to the water.)
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Letr represent the speed of the motorboat Ra...View the full answer
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