document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=319921>Question 319921</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An airplane takes 9 hours to travel a distance of 6480km against the wind. The return trip takes 8 hours with the wind. What is the rate of the plane in still air and what is the rate 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 #229116 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=229116\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> D=RT<BR>\n" );
document.write( "6,480=R9<BR>\n" );
document.write( "R=6,480/9=720 KMH AGAINST THE WIND.<BR>\n" );
document.write( "6,480=R8<BR>\n" );
document.write( "R=6,480/8<BR>\n" );
document.write( "R=810 KMH WITH THE WIND.<BR>\n" );
document.write( "(810-720)/2=90/2=45 KMH IS THE SPEED OF THE WIND.<BR>\n" );
document.write( "PROOF:<BR>\n" );
document.write( "720+45=765 SPEED OF THE PLANE IN STILL AIR<BR>\n" );
document.write( "810-45=765 DITTO.\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );