document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=310049>Question 310049</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If a plane can travel 480mph with the wind and 400mph against the wind, what is 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 #221760 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=221760\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If a plane can travel 480mph with the wind and 400mph against the wind, what is the speed of the plane in still air?<BR>\n" );
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document.write( "It's called airspeed, and it's the average of the 2.<BR>\n" );
document.write( "Airspeed = (480+400)/2 = 440 mph<BR>\n" );
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document.write( "Airplanes use knots for speed, not miles per hour or km per hour.<BR>\n" );
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