document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=501677>Question 501677</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Two planes leave an airport at the same time, one flying east and the other flying west. The eastbound plane travels 80 mph slower. They are 2880 mi apart after 4 hr. Find  the speed of each plane. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #338608 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=338608\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> West bound plane	x 	mph						<BR>\n" );
document.write( "East bound plane	x+	-80						<BR>\n" );
document.write( "..								<BR>\n" );
document.write( "They are going away from each other.								<BR>\n" );
document.write( "								<BR>\n" );
document.write( "So add up their speed.								<BR>\n" );
document.write( "								<BR>\n" );
document.write( "combined speed = x+x+-80			<BR>\n" );
document.write( "(	2	x	+	-80	) 			<BR>\n" );
document.write( "Time = 	4	hours						<BR>\n" );
document.write( "Distance =   	2880	miles						<BR>\n" );
document.write( "Distance = speed * time								<BR>\n" );
document.write( "(	2	x		-80	)*	4	=	2880<BR>\n" );
document.write( "8	x 		-320	=	2880			<BR>\n" );
document.write( "8	x 	=	2880	+	320			<BR>\n" );
document.write( "8	x 	=	3200					<BR>\n" );
document.write( "/	8							<BR>\n" );
document.write( "x=	400	mph	West bound plane					<BR>\n" );
document.write( "East bound plane	400	+	-80	=	320	mph		<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );