SOLUTION: Train a and b are traveling in the same direction on parallel tracks. Train a is traveling at 80 miles per hour and train b is traveling at 90 miles per hour. Train a passes a stat

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Question 504291: Train a and b are traveling in the same direction on parallel tracks. Train a is traveling at 80 miles per hour and train b is traveling at 90 miles per hour. Train a passes a station at 10:25am. If train b passes the same station at 10:55am, at what time will train b catch up to train a?
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
Train A 80 mph
Train B 90 mph
Train A 10:25
Train B 10:55
Difference in time= 00:30 => 0.5 hours
Train A will have covered 40 miles before Train B starts from station
catch up distance= 40 miles
catch up speed = 90 -80 mph
catch up speed = 10 mph
Catchup time = catchup distance/catch up speed
catch up time= 40 / 10
catch up time= 4 hours
it will catch up at 2:55 pm