SOLUTION: Two cars leave Richmond, Va. at the same time. They travel in opposite directions, one traveling north at 56 mph and the other traveling south at 47 mph. When will they be 206

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Question 711730:
Two cars leave Richmond, Va. at the same time. They travel in opposite directions, one traveling north at 56 mph and the other traveling south at 47 mph. When will they be 206 miles apart?
I am having a hard time setting up the equation. If some one can help me set up the problem I might be able to solve it.
Thank you.

Answer by checkley79(3341) About Me  (Show Source):
You can put this solution on YOUR website!
D=RT
D=56T
D=47T
206=56T+47T
206=103T
T=206/103
T=2 HOURS.
PROOF:
206=56*2+47*2
206=112+94
206=206