SOLUTION: Two trains left a station at the same time traveling in parallel tracks. Both are headed in the same direction. One train travels at 100 kph while the other travels at 125 kph. Aft

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Question 867988: Two trains left a station at the same time traveling in parallel tracks. Both are headed in the same direction. One train travels at 100 kph while the other travels at 125 kph. After how many hours will they be 10 kilometers apart?
I'm really bad at solving word problems. I would greatly appreciate it if you can show me how to solve this. Thanks.
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
Basic travel or movement rates property is RT=D, those variables Rate, Time, Distance.

A data table often helps in uniform rates travel problems.
Let t = unknown time in hours when the two trains are 10 km apart.

_______________speed___________time___________distance
SLOW___________100_____________t______________100t
FAST___________125_____________t______________125t
DIFFERENCE_____________________________________10