document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=795536>Question 795536</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An airplane makes a 180 mile trip with a headwind in 2 hours.  It makes a return trip in the tailwind in 1.5 hours. 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 #481053 by </B><A HREF=/tutors/aboutme.mpl?userid=Cromlix><B>Cromlix(4381)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Cromlix><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=Cromlix><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=481053\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Distance/Time = speed<BR>\n" );
document.write( "180/2 = 90 mph (against the wind)<BR>\n" );
document.write( "180/1.5 = 120 mph (with the wind)\r<BR>\n" );
document.write( "\n" );
document.write( "90 + x = 120 - x<BR>\n" );
document.write( "Collect like terms:<BR>\n" );
document.write( "-30 = -2x<BR>\n" );
document.write( "x = 15 mph<BR>\n" );
document.write( "This is the speed of the wind.<BR>\n" );
document.write( "Hope this helps.<BR>\n" );
document.write( ";-) </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );