document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=522140>Question 522140</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I am having problems setting this up. Please help me.\r<BR>\n" );
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document.write( "An airplane travels at a specific air speed between two cities. On a certain day the airplane takes two hours to make the trip with the help of a 10 mph tailwind. Returning home later in the day, the trip takes five hours with a 30 mph headwind. Find the speed of the plane in still air. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #346710 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=346710\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> plane speed	=x	mph									<BR>\n" );
document.write( "wind speed	10	mph									<BR>\n" );
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document.write( "time with wind	2	hours									<BR>\n" );
document.write( "time against wind(30mph)	4	hours									<BR>\n" );
document.write( "Distance = same											<BR>\n" );
document.write( "2(x+10)=4(x-30)<BR>\n" );
document.write( "2x+20	=	4	x	-120					<BR>\n" );
document.write( "4x-2x=20-120					<BR>\n" );
document.write( "x 	=	140	mph	plane speed							<BR>\n" );
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