SOLUTION: At noon, two airplanes leave an airport and travel in opposite directions at the same altitude. The slower plane is flying at 360 mph, and the faster plane at 450 mph. When will th

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Question 949793: At noon, two airplanes leave an airport and travel in opposite directions at the same altitude. The slower plane is flying at 360 mph, and the faster plane at 450 mph. When will the two planes be 1350 miles apart?
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
The two planes are separating at the rate of 360 mph + 450 mph=810 mph.
To separate by 1350 miles: 1350 miles/810 mph=1.67 hrs.
ANSWER:The two planes will be 1350 miles apart in 1.67 hours, at 1:40 PM.