document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=65311>Question 65311</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The speed of an airplane in still air is 214mph. The plane travels 819mi against the wind and 1505 mi with the wind in a total time of 12 hrs. 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 #45873 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=45873\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 12=819/(214-X)+1505/(214+X)<BR>\n" );
document.write( "12=[819(214+X)+1505(214-X)]/(214-X)(214+X)<BR>\n" );
document.write( "12=(175266+819X+322070-1505X)/(45796-X^2)<BR>\n" );
document.write( "12(45796-X^2)=-686X+497336<BR>\n" );
document.write( "549552-12X^2+686X-497336=0<BR>\n" );
document.write( "12X^2-686X-52216=0<BR>\n" );
document.write( "USING THE QUADRATIC EQUATION WE GET X=100.4745 THE SPEED OF THE WIND<BR>\n" );
document.write( "PROOF<BR>\n" );
document.write( "12=819/(214-100.4745)+1505/(214+100.4745)<BR>\n" );
document.write( "12=819/113.5255+1505/314.4745<BR>\n" );
document.write( "12=7.2142382+4.7857616<BR>\n" );
document.write( "12=12<BR>\n" );
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document.write( "MERRY CHRISTMAS </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );