document.write( "Question 96497: Joe traveled against the wind in a small plane for 3 hours. The return trip with the wind took 2.8 hours. Find the speed of the wind if the speed of the plane in still air is 180mph. \n" ); document.write( "
Algebra.Com's Answer #70270 by edjones(8007)\"\" \"About 
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d=distance t=time s=speed w=wind speed
\n" ); document.write( "d=ts
\n" ); document.write( "going: d=3(180-w)=540-3w
\n" ); document.write( "returning: d=2.8(180+w)=504+2.8w
\n" ); document.write( "since the distances are equal: 540-3w=504+2.8w
\n" ); document.write( "add 3w and subtract 504 from each side. 5.8w=36
\n" ); document.write( "w=6.2 mph approx.
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