document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=469312>Question 469312</A>: <I><SPAN STYLE=\"word-break: break-all;\"> pleas help me solve the equation:<BR>\n" );
document.write( " Anne flew her plane 400 km with the wind in the same time it took her to go 200 km against the wind. The speed of the wind is 50km per hour. Fine 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 #322052 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=322052\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> plane speed		x	mph				<BR>\n" );
document.write( "wind speed		50	mph				<BR>\n" );
document.write( "..							<BR>\n" );
document.write( "against wind   		x	-	50	mph		<BR>\n" );
document.write( "with wind  		x   	+	50	mph		<BR>\n" );
document.write( "							<BR>\n" );
document.write( "Distance against 	wind	200					<BR>\n" );
document.write( "Distance with 	wind	400					<BR>\n" );
document.write( "Time = same							<BR>\n" );
document.write( "200	/(x-	50	)=	400	/(x+	50	)<BR>\n" );
document.write( "200	*(x+	50	)=	400	*(x-	50	)<BR>\n" );
document.write( "200	x  	+	10000	=	400	x	-20000<BR>\n" );
document.write( "400	x  	-200	x   	=	20000	+	10000<BR>\n" );
document.write( "200	x  	=	30000				<BR>\n" );
document.write( "/	200						<BR>\n" );
document.write( "	x=	150	mph				<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );