SOLUTION: its 5am 2 trains are 1,560 miles apart traveling on parallel track towards each other. one is travelling at 100 mph, the other at 140 mph. at what time will they pass each other?

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Question 887989: its 5am 2 trains are 1,560 miles apart traveling on parallel track towards each other. one is travelling at 100 mph, the other at 140 mph. at what time will they pass each other?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
its 5am 2 trains are 1,560 miles apart traveling on parallel track towards each other. one is travelling at 100 mph, the other at 140 mph. at what time will they pass each other?
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Add the speeds when going in opposite directions.
100+140 = 240 mi/hr
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d = r*t
t = d/r (time until they meet)