SOLUTION: A train left mooseport traveling west at 50mph.One hour later , another train left Mooseport traveling east at 70 mph. How many hours had the first train been traveling when they w

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Question 156545: A train left mooseport traveling west at 50mph.One hour later , another train left Mooseport traveling east at 70 mph. How many hours had the first train been traveling when they were 350 miles apart?
Answer by checkley77(12569) About Me  (Show Source):
You can put this solution on YOUR website!
50t+70(t-1)=350
50t+70t-70=350
120t=350+70
120t=420
t=420/120
t=3.5 hours they will be 350 miles apart.
Proof:
50*3.5+70*2.5=350
175+175=350
350=350