SOLUTION: trains a and b are traveling in the same direction on parallel tracks. Train A is traveling at 40 miles per hour and train b is traveling at 44 miles per hour. Train A passes a sta

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Question 419177: trains a and b are traveling in the same direction on parallel tracks. Train A is traveling at 40 miles per hour and train b is traveling at 44 miles per hour. Train A passes a station at 4:20 am. If train b passes the same station at 4:50am, at what time will train b catch up to train a
Answer by mananth(16946) About Me  (Show Source):
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Train A speed 40 mph
Train B speed 44 mph

Train A passes station at 04:20
Train B passes station at 04:50

Difference in time= 00:30 30
Train A will have covered 20 miles before Train B starts

catch up distance= 20 miles
catch up speed = 44 -40 mph
catch up speed = 4 mph

Catchup time = catch up distance/catch up speed
catch up time= 20 / 4
catch up time= 5 hours
catch up time= 300 minutes