SOLUTION: Please help!! 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 traveling at 120 miles per hour. Train

Question 454187: Please help!!
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 traveling at 120 miles per hour. Train A passes a station at 7:20 pm If train B passes the same station at 7:35 pm at what time will train B catch up to a train A?
When will train B catch up with train A?

Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
Train A has a speed 15 miles per hour greater than that of Train B. If Train A travels 150 miles in the same time Train B travels 120 miles, what are the speeds of the two trains? 100 mph
Train B has traveled 120 mph
Train reaches station at 07:20
Train B reaches station at 07:35
Difference in time= 00:15 0.25
will have covered 25 miles before Train B starts
catch up distance= 25 miles
catch up speed = 120 -100 mph
catch up speed = 20 mph
Catchup time = catchup distance/catch up speed
catch up time= 25 / 20
catch up time= 1.25 hours
Add this 1hour 15 minutes to 7:25 . thats the time Train B crosses Train A
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