document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=722402>Question 722402</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a bus  leaves at 5.00pm for a 273 mile trip to vegas.this week it left at 5:15pm.to arrive in vegas on time the driver drives 7 miles per hour faster than usual.what is the usual speed ? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #442738 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=442738\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Usual speed=	x   											<BR>\n" );
document.write( "Distance =	273	miles										<BR>\n" );
document.write( "speed increased by	7	miles/h										<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=Time+=+distance+%2F+speed ALIGN=MIDDLE  ALT=\"Time+=+distance+%2F+speed\"   DISABLED_style= \"max-width:90%; height:auto;\" >												<BR>\n" );
document.write( "												<BR>\n" );
document.write( "It leaves 	 1/4	hour late	 reaches on time									<BR>\n" );
document.write( "It takes 	 1/4	hour less										<BR>\n" );
document.write( "												<BR>\n" );
document.write( "Usual Time- time taken today =			 1/4									<BR>\n" );
document.write( "												<BR>\n" );
document.write( "273	/x-	273	/(x+	7	)=	 1/4						<BR>\n" );
document.write( "												<BR>\n" );
document.write( "Multiply by the LCD												<BR>\n" );
document.write( "												<BR>\n" );
document.write( "273	*	4	(x+	7	)-	273	*	4	x=	x(x+	4	)<BR>\n" );
document.write( "1092	(x+	7	)-	1092	x=	X^2 +	4	x				<BR>\n" );
document.write( "1092	x+	7644	-	1092	x=	X^2 +	4	x				<BR>\n" );
document.write( "x^2+	4	x=	7644								<BR>\n" );
document.write( "complete the squares												<BR>\n" );
document.write( "												<BR>\n" );
document.write( "(x+ 	2	)^2=	7644+	4								<BR>\n" );
document.write( "take the square root												<BR>\n" );
document.write( "												<BR>\n" );
document.write( "x+  	2	=+/-	<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%28%097648%09%29 ALIGN=MIDDLE  ALT=\"sqrt%28%097648%09%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >							<BR>\n" );
document.write( "												<BR>\n" );
document.write( "x+  	2	=+/-	87.45									<BR>\n" );
document.write( "												<BR>\n" );
document.write( "so x = 	85.45Usual speed=	x   											<BR>\n" );
document.write( "Distance =	273	miles										<BR>\n" );
document.write( "speed increased by	7	miles/h										<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=Time+=+distance+%2F+speed ALIGN=MIDDLE  ALT=\"Time+=+distance+%2F+speed\"   DISABLED_style= \"max-width:90%; height:auto;\" >												<BR>\n" );
document.write( "												<BR>\n" );
document.write( "It leaves 	 1/4	hour late	 reaches on time									<BR>\n" );
document.write( "It takes 	 1/4	hour less										<BR>\n" );
document.write( "												<BR>\n" );
document.write( "Usual Time- time taken today =			 1/4	4								<BR>\n" );
document.write( "												<BR>\n" );
document.write( "273	/x-	273	/(x+	7	)=	 1/4						<BR>\n" );
document.write( "												<BR>\n" );
document.write( "Multiply by the LCD												<BR>\n" );
document.write( "												<BR>\n" );
document.write( "273	*	4	(x+	7	)-	273	*	4	x=	x(x+	4	)<BR>\n" );
document.write( "1092	(x+	7	)-	1092	x=	X^2 +	4	x				<BR>\n" );
document.write( "1092	x+	7644	-	1092	x=	X^2 +	4	x				<BR>\n" );
document.write( "x^2	4	x-	7644	=0								<BR>\n" );
document.write( "complete the squares												<BR>\n" );
document.write( "												<BR>\n" );
document.write( "(x+ 	2	)^2=	7644	4								<BR>\n" );
document.write( "take the square root												<BR>\n" );
document.write( "												<BR>\n" );
document.write( "x+  	2	=+/-	sqrt(	7648	)							<BR>\n" );
document.write( "												<BR>\n" );
document.write( "x+  	2	=+/-	87.45									<BR>\n" );
document.write( "												<BR>\n" );
document.write( "so x = 	85.45	mph	usual speed<BR>\n" );
document.write( "										<BR>\n" );
document.write( "												<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );