document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=253210>Question 253210</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Another word problem!\r<BR>\n" );
document.write( "\n" );
document.write( "A six passenger plan cruises at 180 mph in calm air.  If the plane flies 7 miles with the wind in the same amount of time as it flies 5 miles against the wind, then what is the wind speed?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #185489 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=185489\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let w=wind speed, s=speed, d=distance, t=time<BR>\n" );
document.write( "s/d=t<BR>\n" );
document.write( "(s+w)/7 = (s-w)/5 <BR>\n" );
document.write( "5(180+w)=7(180-w)<BR>\n" );
document.write( "900+5w=1260-7w<BR>\n" );
document.write( "12w=360<BR>\n" );
document.write( "w=30 mph<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Ed </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );