SOLUTION: A train leaves bridgewater, heading north, at 6 a.m. at 40 mph. Anotherr train leaves bridgewater, heading north, on a parallel track at 7 a.m. at 50mph. What time will it be when

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: A train leaves bridgewater, heading north, at 6 a.m. at 40 mph. Anotherr train leaves bridgewater, heading north, on a parallel track at 7 a.m. at 50mph. What time will it be when       Log On

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Question 788660: A train leaves bridgewater, heading north, at 6 a.m. at 40 mph. Anotherr train leaves bridgewater, heading north, on a parallel track at 7 a.m. at 50mph. What time will it be when the two trains are the same distance away from bridgewater?
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
6AM train travels for 1+h hours.
7AM train travels for h hours.

After how much time h, are their distances the same?
40%28h%2B1%29=50h, which is using rate*time to form expressions for the distance.

40h%2B40=50h
40=10h
h=40%2F10
h=4 hours.