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OpenStudy (cherie_magee):
A boat makes a 120-mile trip downstream in 3 hours but makes the return trip in 4 hours. If b = the rate of the boat in still water and c = the rate of the current, which of the following equations represents the trip upstream? 3(b - c) = 120 4(b - c) = 120 4(b + c) = 120
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OpenStudy (anonymous):
4(b - c) = 120
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