document.write( "Question 1004579: 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 the air. \n" ); document.write( "
Algebra.Com's Answer #621014 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
The airspeed is the average of the 2 groundspeeds. \n" ); document.write( "
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