document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1149196>Question 1149196</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A couple took a small airplane for a flight to the wine country for a romantic dinner and then returned home.  The plane flew a total of 8 hours and each way the trip was 424 miles.  If the plane was flying at 180 miles per hour, what was the speed of the wind that affected the plane? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #770550 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13203)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=770550\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "x = wind speed<br><BR>\n" );
document.write( "180+x = airplane speed with wind<BR>\n" );
document.write( "180-x = airplane speed against the wind<br><BR>\n" );
document.write( "424/(180+x) = hours with the wind<BR>\n" );
document.write( "424/(180-x) = hours against the wind<br><BR>\n" );
document.write( "The total time was 8 hours:<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=424%2F%28180%2Bx%29%2B424%2F%28180-x%29+=+8 ALIGN=MIDDLE  ALT=\"424%2F%28180%2Bx%29%2B424%2F%28180-x%29+=+8\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "The solution is not a \"nice\" number; so the equation is most easily solved by using a graphing calculator to graph the two expressions on either side of the equal sign and finding their point of intersection.<br> </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );