SOLUTION: At 6:00 a.m. two planes started from the same airport and flew west. One plane averaged 520 miles per hour, and the other plane averaged 600 miles per hour. At what time were the p

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Question 235559: At 6:00 a.m. two planes started from the same airport and flew west. One plane averaged 520 miles per hour, and the other plane averaged 600 miles per hour. At what time were the planes 280 miles apart?
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
600T-520T=280
80T=280
T=280/80
T=3.5 HOURS AFTER THEY LEAVE THEY WILL BE 280 MILES APART.
6:00+3:30=9:30 am. ANS.