SOLUTION: Trains A and B are traveling in the same direction on parallel tracks. train A is traveling at 100 miles per hour and train B is traveling at 104 miles per hour. Train A passes a

Question 423681: Trains A and B are traveling in the same direction on parallel tracks. train A is traveling at 100 miles per hour and train B is traveling at 104 miles per hour. Train A passes a station at 6:10 P.M. If train B passes the same station at 6:40 P.M., at what time will train B catch up to train A?
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
Train A speed 100 mph
Train B speed 104 mph

Train A passes station at 06:10
Train B passes station at 06:40

Difference in time=00:30
Train A will have covered 50 miles before Train B starts
catch up distance= 50 miles
catch up speed = 104-100 mph
catch up speed = 4 mph

Catchup time = catchup distance/catch up speed
catch up time= 50/4
catch up time= 12.5 hours

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