document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=452927>Question 452927</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Using the 5-step method to solve:\r<BR>\n" );
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document.write( "A sailboat travels 20 miles downstream in 4 hours. It returns in 5 hours. Find the speed of the sailboat in still water and the rate of the current. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #311237 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=311237\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> boat speed = x<BR>\n" );
document.write( "current speed = y<BR>\n" );
document.write( "..<BR>\n" );
document.write( "distance = 20 miles<BR>\n" );
document.write( "time = d/r\r<BR>\n" );
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document.write( "..<BR>\n" );
document.write( "downstream speed = 20/(x+y)<BR>\n" );
document.write( "upstream speed = 20/(x-y)<BR>\n" );
document.write( "..<BR>\n" );
document.write( "20/(x+y)=4<BR>\n" );
document.write( "4x+4y=20<BR>\n" );
document.write( "/4<BR>\n" );
document.write( "x+y=5...............1<BR>\n" );
document.write( "20/(x-y)=5<BR>\n" );
document.write( "5x-5y=20<BR>\n" );
document.write( "/5<BR>\n" );
document.write( "x-y=4...............2\r<BR>\n" );
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document.write( "1	x	+	1	y	=	5	.............1	<BR>\n" );
document.write( "1	x	+	-1	y	=	4	.............2	<BR>\n" );
document.write( "Add the two equations								<BR>\n" );
document.write( "2	x				=	9		<BR>\n" );
document.write( "/	2							<BR>\n" );
document.write( "x	=	4.50						<BR>\n" );
document.write( "plug value of 			x	in (1)				<BR>\n" );
document.write( "1	x	+	1	y	=	5		<BR>\n" );
document.write( "4.5		+	1	y	=	5		<BR>\n" );
document.write( "			1	y	=	5		-4.5<BR>\n" );
document.write( "			1	y	=	0.5		<BR>\n" );
document.write( "				y	=	0.50		<BR>\n" );
document.write( " </SPAN>\n" );
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