SOLUTION: A plane leave Minneapolis Airport traveling 432 mph. A second plane leave Minneapolis at the same time traveling 480 mph in the opposite direction. When will the planes be 500 mile

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Question 588739: A plane leave Minneapolis Airport traveling 432 mph. A second plane leave Minneapolis at the same time traveling 480 mph in the opposite direction. When will the planes be 500 miles apart?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
432x+480x=500
912x=500
x=500/912

a little more than half an hour.