document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=241737>Question 241737</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A plane can fly 540 miles with the wind in one hour less than it can fly 480 miles<BR>\n" );
document.write( "against the wind. The average wind speed is 30 miles per hour. Find the speed of the plane in still air. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #177843 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=177843\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A plane can fly 540 miles with the wind in one hour less than it can fly 480 miles<BR>\n" );
document.write( "against the wind. The average wind speed is 30 miles per hour. Find the speed of the plane in still air.<BR>\n" );
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document.write( "It's 540 - 30 = 510 mph<BR>\n" );
document.write( "or 480 + 30 = 510 mph<BR>\n" );
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document.write( "The \"speed of the plane in still air\" is called the airspeed.  The people writing textbooks don't know much.<BR>\n" );
document.write( "Also, planes use knots for speed, and wind speed is in knots, not miles per hour.<BR>\n" );
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