Question

4. Two cars leave town at the same time going in the

same direction. One travels 55 mi/h and the other
travels 48 mi/h. In how many hours will they be 49
miles apart?

Show work please

Answer 1

7 hours

Explanation:

The difference in speed of the cars is

55 mph - 48 mph = 7 mph

How long does it take for a difference of 7 mph to yield a difference in distance of 49 miles?

speed = distance/time

distance = speed * time

time = distance/speed

time = 49 miles/7 mph

time = 7 hours