SOLUTION: A freight train starts from Los Angeles and heads for Chicago at 40mph. Two hours later a passenger train leaves the same station for Chicago traveling at 60mph. How long will it b

Question 798311: A freight train starts from Los Angeles and heads for Chicago at 40mph. Two hours later a passenger train leaves the same station for Chicago traveling at 60mph. How long will it be before the passenger train overtakes the freight train?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
Assuming they are on parallel tracks and not on the same track,
60x=40(x+2)
60x=40x+80
20x=80
x=4 hours for the passenger train to overtake the freight train.
check
60*4=40*(4+2)
240=240
ok

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