document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=65322>Question 65322</A>: <I><SPAN STYLE=\"word-break: break-all;\"> an airplane flies 1449 miles against the wind and 1539 miles with the wind in a total time of 5hours. the speed of the airplane in still air is 600mph. what is the speed of the wind ? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #45857 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley71><B>checkley71(8403)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley71><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=45857\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1449/(600-X)+1539/(600+X)=5<BR>\n" );
document.write( "[1449(600-X)+1539(600-X)]/(360000-X^2)=5<BR>\n" );
document.write( "(869400-1449X+923400+1539X)/360000-X^2=5<BR>\n" );
document.write( "1792800+90X=1800000-5X^2<BR>\n" );
document.write( "5X^2+90X-7200=0<BR>\n" );
document.write( "X^2+18X-1440=0<BR>\n" );
document.write( "(X-30)(X+48)=0<BR>\n" );
document.write( "X-30=0<BR>\n" );
document.write( "X=30 REAL SOLUTION<BR>\n" );
document.write( "X+48<BR>\n" );
document.write( "X=-48 SOLUTION<BR>\n" );
document.write( "PROOF<BR>\n" );
document.write( "1449/(600-30)+1539/(600+30)=5<BR>\n" );
document.write( "1449/570+1539/630=5<BR>\n" );
document.write( "2.542+2.448=5<BR>\n" );
document.write( "5=5<BR>\n" );
document.write( "##########################################<BR>\n" );
document.write( "MERRY CHRISTMAS </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );