Question 475919
Two trains leave the station at the same time, one heading west and the other east. The westbound train travels at 110 miles per hour. The eastbound train travels at 90 miles per hour. How long will it take for the two trains to be 360 miles apart? 
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Separation rate is (110+90) mph.
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time = distance/rate = 360/200 = 1.8 hrs = 1 hr 48 minutes
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Cheers,
Stan H.
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