document.write( "Question 933529: An airplane travelled 245 mph with the wind and 175 mph against the wind. Find the speed of the plane in still air and the speed of the wind. \n" ); document.write( "
Algebra.Com's Answer #566889 by Alan3354(69443)\"\" \"About 
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The plane's airspeed is the average of the 2 groundspeeds.
\n" ); document.write( "The windspeed is the difference between airspeed and groundspeed.
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