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A motorboat heads upstream a distance of 24 miles on a river whose current is running at 3 miles per hour. The trip up and back takes 6 hours. Assuming that the motorboat maintained a constant speed relative
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A motorboat heads upstream a distance of 24 miles on a river whose current is running at 3 miles per hour. The trip up and back takes 6 hours. Assuming that the motorboat maintained a constant speed relative to the water, what was its speed?

User Wannes Rosiers
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2 Answers

4 votes
To get speed you do Distance/Time.
User OverZealous
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9mph is the boat's actual speed.
12mph with the stream and 6mph against the stream.
12mph takes 2 hours to get there and 6mph takes 4 to get back = 6hours.
User MacLemon
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