A plane flies 720 mi against a steady 30-mi/h headwind....

sbates

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Aug 16, 2007
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A plane flies 720 mi against a steady 30-mi/h headwind and then returns to the same point with the wind. If the entire trip takes 10 h, what is the plane’s speed in still air?

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TchrWill

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Jul 7, 2005
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Re: Science and medicine I

A plane flies 720 mi against a steady 30-mi/h headwindand then returns to the same point with the wind. If the entire trip takes 10 h, whatis the plane’s speed in still air?
How about 720/(V - 30) + 720/(V + 30) = 10

SOlve for V.
 
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