SOLUTION: I need help with this problem.Two planes leave the same airport traveling opposite directions. One fly at the rate of 340 miles per hour, the other at 260 miles per hour. In how ma

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Question 867678: I need help with this problem.Two planes leave the same airport traveling opposite directions. One fly at the rate of 340 miles per hour, the other at 260 miles per hour. In how many hours will the two planes be at 3,000 miles apart?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
The speeds are added when going in opposite directions.
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d = r*t
t = d/r