document.write( "Question 383725: if a plane can travel 470 miles per hour with the wind and 430 miles per hour against the wind find the speed of the plane in still air \n" ); document.write( "

Algebra.Com's Answer #271680 by Alan3354(69443) $\"\"$ $\"About$

You can put this solution on YOUR website!
It's the average, (430 + 470)/2 = 450 mph
\n" ); document.write( "It's called the airspeed.
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