SOLUTION: A train leaves the terminal averaging 45 MPH. A second train leaves the same terminal 2 hours later, averaging 60 MPH. How long will it take the second train to catch up to the fir

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Question 571298: A train leaves the terminal averaging 45 MPH. A second train leaves the same terminal 2 hours later, averaging 60 MPH. How long will it take the second train to catch up to the first train?

Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
the 1st train has a 90 mi (45 * 2) head start

the second train closes the distance at 15 mph (60 - 45)

how long to go 90 mi at 15 mph?