document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=795257>Question 795257</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An airplane makes a trip in 4.3 hours flying with a headwind.  The plane makes the trip back in 3.9 hours with a tailwind.  If the windspeed is 10 miles per hour find the speed of the airplane. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #480913 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=480913\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Airplane speed = x<BR>\n" );
document.write( "Airplane flying with headwind = x - 10<BR>\n" );
document.write( "Airplane flying with tailwind = x + 10<BR>\n" );
document.write( "4.3 * (x - 10) = 3.9 * (x + 10)<BR>\n" );
document.write( "4.3x - 43 = 3.9x + 39<BR>\n" );
document.write( "Collect like terms:<BR>\n" );
document.write( "4.3x - 3.9x = 39 + 43<BR>\n" );
document.write( "0.4x = 82<BR>\n" );
document.write( "x = 205 mph<BR>\n" );
document.write( "This is the airplane's speed.<BR>\n" );
document.write( "Hope this helps.<BR>\n" );
document.write( ":-) </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );