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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 represents the trip up stream

Respuesta :

Answer:

Step-by-step explanation:

The boat makes 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, the following equations represents the trip upstream; 4(b - c) = 120. The answer will be B.