SOLUTION: Two airplanes leave Dallas at the same time and fly in opposite directions. One airplane travels 80 miles per hour faster than the other. After three hours, they are 2940 miles a
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Question 26566: Two airplanes leave Dallas at the same time and fly in opposite directions. One airplane travels 80 miles per hour faster than the other. After three hours, they are 2940 miles apart. What is the rate of each airplane? Answer by Paul(988) (Show Source):
You can put this solution on YOUR website! Airplane B = x
Airplane A = x+80
After hours meaning 3 times them both.
Equation: x+x+80=2940
After 3 hours:
3(x+x+80)=2940
6x+240=2940
6x=2700
x=450 (airplane b)
450+80=530 (airplane a)
Hence, the speed of airplane a is 530mph and the speed of airplane b is 450mph.
Paul.
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