SOLUTION: What is the number of hours it will take an automobile going forty-five miles per hour to catch up with an automobile moving at thirty miles per hour if the slower automobile start

Question 107834: What is the number of hours it will take an automobile going forty-five miles per hour to catch up with an automobile moving at thirty miles per hour if the slower automobile starts one hour before the faster automobile?
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
the slower automobile has a 30 mi. (30 mph X 1 h) head start

the faster automobile catches up at the rate of 15 mph (45 mph - 30 mph)

so it will take the faster automobile 2 h. (30 mi / 15 mph) to catch the slower automobile
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