Aboat makes a 120-mile trip downstream in 3 hours but makes the return trip in 4 hours. what is the rate of the boat in still water?

a.30 mph
b.32 mph
c.35 mph

The correct answer is C. The rate of the boat in still water is of 35 miles per hour.

Step-by-step explanation:

As the boat makes a 120 mile trip downstream in 3 hours, and the return trip in 4 hours, we can say that it makes an entire 240 mile trip in 7 hours. As 240 / 7 = 35, that is the average speed the boat traveled in still water: the boat's rate in still water was of 35 miles per hour.

e) none of the above because the measure of angle cba is 101°

the answer is d

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