document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=58755>Question 58755</A>: <I><SPAN STYLE=\"word-break: break-all;\"> . Big plane. A six-passenger plane cruises at 180 mph in calm air.  If the plane flies 7 miles with the wind I the same amount 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 #40304 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=40304\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 7/(180+X)=5/(180-X)<BR>\n" );
document.write( "5(180+X)=7(180-X)<BR>\n" );
document.write( "900+5X=1260-7X<BR>\n" );
document.write( "5X+7X=1260-900<BR>\n" );
document.write( "12X=360<BR>\n" );
document.write( "X=360/12<BR>\n" );
document.write( "X=30 MPH IS THE WIND SPEED<BR>\n" );
document.write( "PROOF<BR>\n" );
document.write( "7/(180+30)=5/(180-30)<BR>\n" );
document.write( "7/210=5/150<BR>\n" );
document.write( "5*210=7*150<BR>\n" );
document.write( "1050=1050  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );