SOLUTION: A car leaves a highway rest are 1 and a half hours after a truck. Both are traveling in the same direction. In how many hours will the car pass the truck, if their respective rates

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Question 844862: A car leaves a highway rest are 1 and a half hours after a truck. Both are traveling in the same direction. In how many hours will the car pass the truck, if their respective rates are 90 and 60 kph?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
the truck is going 60 mph . In 1.5 hours (60*1.5) it goes 90 miles
The car gains on the truck at 30 mph
90/30=3
It will take 3 hours for the car to pass the truck.