SOLUTION: A car and a train leave station A at the same time for station B, 150 miles away. If the speed of the car averages twice the speed of the train and the car arrives 2.5 hours bef
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Question 1161917: A car and a train leave station A at the same time for station B, 150 miles away. If the speed of the car averages twice the speed of the train and the car arrives 2.5 hours before the train, find the speed of the car and the speed of the train.
Answer by greenestamps(13367) (Show Source): You can put this solution on YOUR website!
car speed = twice train speed --> car takes half as long
car takes half as long and arrives 2.5 hours before the train --> car takes 2.5 hours and train takes 5 hours
cars travels 150 miles in 2.5 hours --> average speed 150/2.5 = 60mph
train travels 150 mile in 5 hours --> average speed 150/5 = 30mph