SOLUTION: a train leaves a station and travels north at 75 km/h. two hours later a second train leaves on a parallel track and travels north at 125km/h. how far from the station will they me

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Question 504380: a train leaves a station and travels north at 75 km/h. two hours later a second train leaves on a parallel track and travels north at 125km/h. how far from the station will they meet?
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
Train A 75 mph
Train B 125 mph
Difference in time= 04:00 => 4 hours
Train A will have covered 300 miles before Train B starts from station
catch up distance= 300 miles
catch up speed = 125 -75 mph
catch up speed = 50 mph
Catchup time = catchup distance/catch up speed
catch up time= 300 / 50
catch up time= 6 hours

Train B speed = 125 mph
Time to catch up = 6 hours
D=Speed * time
D= 125 * 6
D= 750 miles
Train B will catch up when it has traveled 750 miles