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Two trains leave the same station at the same time, but are headed in opposite directions. One train travels at 70 mph and the other train travels at 80 mph.

How much time passes until the trains are 600 mi apart?

 Sep 11, 2019

Every hour the train goes 70-(-80) = 150 miles further apart 

600/150 = 4 hours.


You are very welcome!


 Sep 11, 2019

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