Question

two trucks leave a factory at the same time. one travels east 60 miles per hour, and the other travels west at the 39 miles per hour. in how many hours will they be 150 miles apart?

Answer 1

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Answer:

1 17/33 hours, about 1.52 hours

Explanation:

The distance between the trucks is increasing at the rate of 60+39 = 99 miles each hour. Then the time to get to a separation distance of 150 miles is ...

(150 mi)/(99 mi/h) = (150/99) h = 1 17/33 h

The trucks will be 150 miles apart after ...

1 17/33 hours, about 1 hour 30 min 55 seconds.