SOLUTION: two small planes fly past each other headed in exactly opposite directions. one is flying 140 mph and the other is flying 110 mph. in how many hours will the planes be exactly 400
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Question 536109: two small planes fly past each other headed in exactly opposite directions. one is flying 140 mph and the other is flying 110 mph. in how many hours will the planes be exactly 400 miles apart? Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! two small planes fly past each other headed in exactly opposite directions. one is flying 140 mph and the other is flying 110 mph. in how many hours will the planes be exactly 400 miles apart?
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Going in opposite directions --> add their speeds
= 250 mi/hr
r = 250 mi/hr of each plane with respect to the other.
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d = r*t
t = d/r
