SOLUTION: A car travels at a speed of 48mph, another car leaves one hour later at a speed of 72mph. How long will it take for the second car to catch up to the first car?

Question 573464: A car travels at a speed of 48mph, another car leaves one hour later at a speed of 72mph. How long will it take for the second car to catch up to the first car?
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
speed of first car= 48 mph
speed of second car = 72 mph
second car leaves 1 hour late.
so when second car leaves first car has traveled 48 miles
catch up distance = 48 miles
same direction so catch up speed = 72-48 = 24 mph
t=d/r
t=48/24
t= 2 hours
catch up time = 2hours

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