document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=551691>Question 551691</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A plane flies with a ground speed of 160 mph if there is no wind. It travels 350 miles with a headwind in the same time it takes to go 450 miles with a tailwind. Find 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 #359854 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16949)</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=359854\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> plane speed	=	160	km/h										<BR>\n" );
document.write( "wind speed	=	x	km/h										<BR>\n" );
document.write( "wind speed													<BR>\n" );
document.write( "speed against	wind	160	-	x									<BR>\n" );
document.write( "speed with	wind	160	+	x									<BR>\n" );
document.write( "													<BR>\n" );
document.write( "Distance against	wind	350	km										<BR>\n" );
document.write( "Distance with 	wind	450	km										<BR>\n" );
document.write( "													<BR>\n" );
document.write( "t=d/r	time against = time with			wind									<BR>\n" );
document.write( "350/(160-x)=450	/(160+x	)<BR>\n" );
document.write( "350(160	+x)=450	(160-x)			<BR>\n" );
document.write( "56000-+	350	x	=	72000		-450	x 					<BR>\n" );
document.write( "450x+350x	=	16000								<BR>\n" );
document.write( "800	x	=	16000										<BR>\n" );
document.write( "/	800												<BR>\n" );
document.write( "x 	=	20	mph	wind speed									<BR>\n" );
document.write( "m.ananth@hotmail.ca													<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );