SOLUTION: how to solve: a truck enters a highway driving 60 mph. A car enters the highway at the same place 13 minutes later and drives 75 mph in the same direction. From the time the car en

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Question 604096: how to solve: a truck enters a highway driving 60 mph. A car enters the highway at the same place 13 minutes later and drives 75 mph in the same direction. From the time the car enters the highway, how long will it take for the car to pass the truck?
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
the truck has a 13 mi head start (60 mph * 13/60 hr)

the car is catching up at 15 mph (75 mph - 60 mph)

t = d / r ___ t = 13 mi / 15 mph