SOLUTION: A truck enters a highway driving 60 mph. A car enters the highway at the same place 7 minutes later and drives 72 mph in the same direction.
From the time the car enters the hig
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From the time the car enters the hig
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Question 208301: A truck enters a highway driving 60 mph. A car enters the highway at the same place 7 minutes later and drives 72 mph in the same direction.
From the time the car enters the highway, how long will it take the car to pass the truck? Found 2 solutions by Alan3354, rfer:Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! A truck enters a highway driving 60 mph. A car enters the highway at the same place 7 minutes later and drives 72 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 is 1 mile per minute, so the truck is 7 miles ahead when the car enter.
The car is gaining on the truck 1t 12 mph (72-60).
7 miles at 12 mph will take 35 minutes.