SOLUTION: if a plane travels 490 mph with the wind and 410 mph against the wind what is the speed of the plane in still air? How do you solve this? Thank you!

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Question 563848: if a plane travels 490 mph with the wind and 410 mph against the wind what is the speed of the plane in still air?
How do you solve this?
Thank you!

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
if a plane travels 490 mph with the wind and 410 mph against the wind what is the speed of the plane in still air?
How do you solve this?
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The plane's airspeed is the average, 450 mi/hr
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a + w = 490
a - w = 410
--> a = 450