document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1206051>Question 1206051</A>: <I><SPAN STYLE=\"word-break: break-all;\"> With a​ tailwind, a aircraft can fly 408 miles in 3 hours. Against this same​ wind, the aircraft can fly the same distance in 4 hours. Find the effect of the wind and the average airspeed of the aircraft.\r<BR>\n" );
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document.write( "The impact of wind resistance on the aircraft is ? and the average airspeed of the aircraft is ?<BR>\n" );
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document.write( "The speed with the wind is plane speed plus wind speed, which is 408/3 = 136mph.<br><BR>\n" );
document.write( "The speed against the wind is plane speed minus wind speed, which is 408/4 = 102mph.<br><BR>\n" );
document.write( "136mph is the plane speed PLUS the wind speed; 102mph is the plane speed MINUS the wind speed; so the difference between the two speeds is twice the wind speed.<br><BR>\n" );
document.write( "Twice the wind speed is 136-102 = 34mph; the wind speed is 17mph.<br><BR>\n" );
document.write( "The speed of the plane is 136-17 = 119mph; or 102+17 = 119mph.<br><BR>\n" );
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