document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=518908>Question 518908</A>: <I><SPAN STYLE=\"word-break: break-all;\"> if a car travelled 5 kilometer an hour faster it would take one hour les to travel 210 km.What is the speed of car and what time does it take. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #345296 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=345296\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> original time - time after speed increase =1\r<BR>\n" );
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document.write( "t=d/r\r<BR>\n" );
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document.write( "d=210<BR>\n" );
document.write( "r=x<BR>\n" );
document.write( "210/x -210/(x+5)=1\r<BR>\n" );
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document.write( "multiply by the LCD x(x+5)\r<BR>\n" );
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document.write( "210(x+5)-240x=x(x+5)<BR>\n" );
document.write( "210x+1050-210x=x^2+5x\r<BR>\n" );
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document.write( "x^2+5x-1050=0\r<BR>\n" );
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document.write( "Find the roots of the equation by quadratic formula								<BR>\n" );
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document.write( "a=	1	,	b=	5	,	c=	-1050	<BR>\n" );
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document.write( "b^2-4ac=	25	+	4200					<BR>\n" );
document.write( "b^2-4ac=	4225		<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%09sqrt%28%094225%09%29=%0965%09 ALIGN=MIDDLE  ALT=\"%09sqrt%28%094225%09%29=%0965%09\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F%282a%29 ALIGN=MIDDLE  ALT=\"x=%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F%282a%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >								<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x1=%28-b%2Bsqrt%28b%5E2-4ac%29%29%2F%282a%29 ALIGN=MIDDLE  ALT=\"x1=%28-b%2Bsqrt%28b%5E2-4ac%29%29%2F%282a%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >								<BR>\n" );
document.write( "x1=(	-5	+	65	)/	2			<BR>\n" );
document.write( "x1=	30							<BR>\n" );
document.write( "x2=(	-5	-65	) /	2				<BR>\n" );
document.write( "x2= 	-35							<BR>\n" );
document.write( "Ignore negative value								<BR>\n" );
document.write( "speed = 30 mph\r<BR>\n" );
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document.write( "m.ananth@hotmail.ca </SPAN>\n" );
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