SOLUTION: An airplane flies 900 miles against a headwind of 25 miles per hour. The plane took 15 minutes longer for this flight with a tailwind of 25 miles per hour. How fast could the plane

Question 668358: An airplane flies 900 miles against a headwind of 25 miles per hour. The plane took 15 minutes longer for this flight with a tailwind of 25 miles per hour. How fast could the plane fly in still air?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!

 

Hi,

Note:  t = D/r



   3600(v+25) - 3600(v-25) = v^2 - 625

         7200*25 +625 = v^2

               425mph = v

and..

 

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