SOLUTION: Train A leaves a station ½ hour ahead of train B. the trains travel on parallel tracks. Train A travels at 25 kilometers per hour while train B travels at 35 kilometers per hour.

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Question 979021: Train A leaves a station ½ hour ahead of train B. the trains travel on parallel tracks. Train A travels at 25 kilometers per hour while train B travels at 35 kilometers per hour. How many hours will it take train B to overtake train A?
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
__________________speed_____________time_______________distance
trainA____________25________________t+1/2_______________d
trainB____________35_________________t__________________d


Train B overtakes train A when both trains reach the same distance from the departure coordinate.

25%28t%2B1%2F2%29=35t
Solve for t.