Question 182837: A truck and a car leave a service station at the same time and travel in the same direction. The truck travels at 55 mph and the car at 40 mph. They can maintain CB radio contact within a range of 10 miles. When will they lose contact?
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! A truck and a car leave a service station at the same time and travel in the same direction. The truck travels at 55 mph and the car at 40 mph. They can maintain CB radio contact within a range of 10 miles. When will they lose contact?
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Going the same direction, their speed relative to each other, the rate at which they're separating, is 55-40, = 15 mph.
10 miles/15 mph = 2/3 hours = 40 minutes.
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