document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=426472>Question 426472</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Two planes took off from an airport at the same time and flew in opposite directions.  One plane traveled 120 miles per hour faster than the other. At the end of three hours the planes were 1500 miles apart  What was the average speed of the slower plane? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #296661 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=296661\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Plane A	x mph						<BR>\n" );
document.write( "Plane B	x+120 mph						<BR>\n" );
document.write( "..								<BR>\n" );
document.write( "They are going away from each other.					<BR>\n" );
document.write( "So add up their speed.								<BR>\n" );
document.write( "								<BR>\n" );
document.write( "combined speed = x+x+120			<BR>\n" );
document.write( "=2x+120 			<BR>\n" );
document.write( "Time = 	3	hours						<BR>\n" );
document.write( "Distance =   	1500	miles						<BR>\n" );
document.write( "Distance = speed * time								<BR>\n" );
document.write( "(2x+120	)*3=1500<BR>\n" );
document.write( "6x+360=	1500			<BR>\n" );
document.write( "6x=1500	-360			<BR>\n" );
document.write( "6x=1140					<BR>\n" );
document.write( "/6							<BR>\n" );
document.write( "x=190	mph	Plane A					<BR>\n" );
document.write( "Plane B	190+120	=310mph		<BR>\n" );
document.write( "								<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );