SOLUTION: Two airplanes leave an airport at the same time and travel in opposite directions. One plane travels 99km/h faster than the other. If the two planes are 12,523 kilometers apart aft

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Question 1170049: Two airplanes leave an airport at the same time and travel in opposite directions. One plane travels 99km/h faster than the other. If the two planes are 12,523 kilometers apart after 7 hours, what is the rate of each plane?
Answer by ikleyn(52786)   (Show Source): You can put this solution on YOUR website!
.

The total distance equation is


    7x + 7*(x+99) = 12523  kilometers.


Simplify and solve,

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