document.write( "Question 1079094: An airplane traveling with wind flies 450 miles in 2 hours. On the return trip the plane takes 3 hours to travel the same distance. Find the speed of the airplane if the wind is still \n" ); document.write( "

Algebra.Com's Answer #693464 by jorel1380(3719) $\"\"$ $\"About$

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Let s be the speed of the plane in still air, and w be the speed of the wind. Then:
\n" ); document.write( "450/s+w=2
\n" ); document.write( "450/s-w=3
\n" ); document.write( "2s+2w=450
\n" ); document.write( "3s-3w=450
\n" ); document.write( "6s+6w=1350
\n" ); document.write( "6s-6w=900
\n" ); document.write( "12s=2250
\n" ); document.write( "s=187.5
\n" ); document.write( "w=37.5
\n" ); document.write( "The plane flies 187.5 mph in still air; the wind speed is 37.5 mph. ☺☺☺☺ \n" ); document.write( "

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