Question 384150
A truck enters a highway doing 60 mph. A car enters the highway at the same place 6 minutes later driving 67 mph in the same direction. From the time the car enters the highway, how long will it take the car to pass the truck?
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60 mph = 1 mile/minute
The truck is 6 miles ahead when the car enters.
The car gains on the truck at 7 mph (67 - 60).
6 mi/7 mph = 6/7 hours
=~ 51.43 minutes