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svp [43]
3 years ago
12

Two people start walking at the same time in the same direction. One person walks at 8 mph and the other person walks at 2 mph.

In how many hours will they be 4.5 miles apart?
Mathematics
1 answer:
schepotkina [342]3 years ago
7 0
Time = distance/speed

The distance between the walkers increases at the rate of (8 mph) -(2 mph) = 6 mph. That distance will be 4.5 mi after ...
  (4.5 mi)/(6 mi/h) = 4.5/6 h = 3/4 h

In 3/4 hour they will be 4.5 miles apart.
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