document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=506556>Question 506556</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A plane is travleing 480 mph with the wind, and 400 mph against the wind. Find the speed of the plane in still air. \r<BR>\n" );
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document.write( "I have no idea how to solve this problem.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #340192 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=340192\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> plane speed in still air = x<BR>\n" );
document.write( "wind speed = y<BR>\n" );
document.write( "x+y=440-----------1<BR>\n" );
document.write( "against wind <BR>\n" );
document.write( "x-y = 400---------2\r<BR>\n" );
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document.write( "add (1) & (2)<BR>\n" );
document.write( "2x=880<BR>\n" );
document.write( "/2<BR>\n" );
document.write( "x= 440 mph<BR>\n" );
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