document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=633003>Question 633003</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A plane flies 500 miles with the wind and 350 miles against the wind in the same length of time. If the speed of the wind is 30 mph, what is 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 #398606 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=398606\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Plane  	speed	x	mph				<BR>\n" );
document.write( "wind   	speed	30	mph				<BR>\n" );
document.write( "..							<BR>\n" );
document.write( "against	wind   	x	-	30	mph		<BR>\n" );
document.write( "with	wind   	x   	+	30	mph		<BR>\n" );
document.write( "							<BR>\n" );
document.write( "Distance against	wind   	350					<BR>\n" );
document.write( "Distance with	wind   	500					<BR>\n" );
document.write( "Time = same	equate the time against with time with current						<BR>\n" );
document.write( "t=d/r							<BR>\n" );
document.write( "350	/(x-	30	)=	500	/(x+	30	)<BR>\n" );
document.write( "350	*(x+	30	)=	500	*(x-	30	)<BR>\n" );
document.write( "350	x  	+	10500	=	500	x	-15000<BR>\n" );
document.write( "350	x  	-500	x   	=	-15000	+	-10500<BR>\n" );
document.write( "-150	x  	=	-25500				<BR>\n" );
document.write( "/	-150						<BR>\n" );
document.write( "	x=	170	mph ---- Plane speed				<BR>\n" );
document.write( "m.ananth@hotmail.ca							<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );