SOLUTION: trains a and b are traveling in the same direction on parallet tracks. train a is traveling at 100 miles per hour and train b is traveling at 104 miles per hour. Train a passes a

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Question 295353: trains a and b are traveling in the same direction on parallet 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 4:20 a.m. If train b passes the same station at 4:50 a.m., at what time will train b catch up to train a?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
train is 30 minutes ahead of train b
In half an hour train a goes 50 miles.
Train b is gaining on train a by 4 mph . It will take 50/4 hours to catch up.
50/4= 25/2=12.5 hours to catch up.