document.write( "Question 476220: It took the pilot an hour and a half to make a flight of 240 miles when flying against a headwind. The return trip took an hour and twelve minutes ( the wind had not shifted nor change its speed). What was the speed of the wind? \n" ); document.write( "
Algebra.Com's Answer #326557 by lwsshak3(11628)\"\" \"About 
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It took the pilot an hour and a half to make a flight of 240 miles when flying against a headwind. The return trip took an hour and twelve minutes ( the wind had not shifted nor change its speed). What was the speed of the wind?
\n" ); document.write( "**
\n" ); document.write( "hour and a half=1.5 hr
\n" ); document.write( "hour and twelve minutes=1.2 hr
\n" ); document.write( "..
\n" ); document.write( "let x=wind speed
\n" ); document.write( "Flying against the wind:
\n" ); document.write( "speed of plane in still air-x=240/1.5
\n" ); document.write( "speed of plane in still air=240/1.5+x
\n" ); document.write( "..
\n" ); document.write( "Flying with the wind:
\n" ); document.write( "speed of plane in still air+x=240/1.2
\n" ); document.write( "speed of plane in still air=240/1.2-x
\n" ); document.write( "..
\n" ); document.write( "240/1.5+x=240/1.2-x
\n" ); document.write( "2x=240/1.2-240/1.5=.3(240)=72
\n" ); document.write( "x=36 mph
\n" ); document.write( "ans:
\n" ); document.write( "wind speed=36 mph \n" ); document.write( "
\n" );