document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=453751>Question 453751</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Two airplanes leave the airport at the same time, flying in opposite directions. One plane flies 100 miles per hour faster than the other. They fly for 4 hours and end up 2,000 miles apart. How fast do they each fly?\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #311701 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=311701\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Plane II	x 	mph						<BR>\n" );
document.write( "Plane I	x+100						<BR>\n" );
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document.write( "They are going away from each other.								<BR>\n" );
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document.write( "So add up their speed.								<BR>\n" );
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document.write( "combined speed = x+x+100			<BR>\n" );
document.write( "(2x+100	) 			<BR>\n" );
document.write( "Time = 	4 hours						<BR>\n" );
document.write( "Distance =2000	miles						<BR>\n" );
document.write( "Distance = speed * time								<BR>\n" );
document.write( "(2x+100	)*4=	2000<BR>\n" );
document.write( "8x+400	=2000			<BR>\n" );
document.write( "8x=2000	-400			<BR>\n" );
document.write( "8x=1600					<BR>\n" );
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document.write( "x=200	mph	Plane II					<BR>\n" );
document.write( "Plane I	200+100	=300	mph		<BR>\n" );
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