SOLUTION: A train leaves Dallas heading for New York at 120 miles per hour. At the same time a second train leaves New York, heading for Dallas at 80 mph. If Dallas and New York are 1540 mi

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Question 361468: A train leaves Dallas heading for New York at 120 miles per hour. At the same time a second
train leaves New York, heading for Dallas at 80 mph. If Dallas and New York are 1540 miles
apart, how long will it take the trains to cross paths?

Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
D=RT
1,540=(120+80)T
1,540=200T
T=1,540/200
T=7.7 HOURS.