Need help with Math word problem

Anonymous
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Question Description

Two trains leave a train station at the same time.  One travels north at 9 miles per hour. The other train travels south at 11 miles per hour.  In how many hours will the two trains be 92 miles apart

JamesM847
School: UIUC

assume after t hours they are 92 miles apart, then we have

9*t+11*t= 92

20t = 92

t = 4.6 hrs

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Anonymous
awesome work thanks

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