Q: 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 downstream?
3(b - c) = 120
3(b + c) = 120
4(b + c) = 120

A: A.3(b - c) = 120

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Asked 3/8/2013 10:16:00 AM

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