document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=504368>Question 504368</A>: <I><SPAN STYLE=\"word-break: break-all;\"> At the same time Kris leaves Washington, D.C. for Detroit. Amy leaves Detroit for Washington, D.C.. The distance between the cities is 510 miles. Amy's average speed is 5 mph faster than Kris's. How fast is Kris driving if they pass each others in 6 hours? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #339596 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=339596\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Kris	x 	mph						<BR>\n" );
document.write( "Amy	x+	5	mph					<BR>\n" );
document.write( "..								<BR>\n" );
document.write( "They are moving towards 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	+	5			<BR>\n" );
document.write( "(	2	x	+	5	) 			<BR>\n" );
document.write( "Time = 	6	hours						<BR>\n" );
document.write( "Distance =   	510	miles						<BR>\n" );
document.write( "Distance = speed * time								<BR>\n" );
document.write( "(	2	x		+5	)*	6	=	510<BR>\n" );
document.write( "12	x 	+	30	=	510			<BR>\n" );
document.write( "12	x 	=	510	+	-30			<BR>\n" );
document.write( "12	x 	=	480					<BR>\n" );
document.write( "/	12							<BR>\n" );
document.write( "x=	40	mph	Kris					<BR>\n" );
document.write( "Amy	40	+	5	=	45	mph		<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );