document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=584697>Question 584697</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A tugboat can pull a boat 24 mi downstream in 2h.going upstream the tugboat can pull the same boat 16 mi in 2h. what is the speed of the tugboat in still water ? what is the speed of the current ?<BR>\n" );
document.write( "how can use the formula d=rt to help you solve the problem?<BR>\n" );
document.write( "how are the tugboat's speed when traveling upstream and downstream related to its speed in still water and the spend of the current?<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 #372845 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=372845\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Boat  	speed	=x	mph				<BR>\n" );
document.write( "current     	speed	=y	mph				<BR>\n" );
document.write( "against wind x-y mph		2	hours				<BR>\n" );
document.write( "with wind x+y	mph	2	hours				<BR>\n" );
document.write( "							<BR>\n" );
document.write( "Distance upstream=	16	miles	Downstream = 24	miles<BR>\n" );
document.write( "t=d/r	against	current     					<BR>\n" );
document.write( "16/(x-y	)=2<BR>\n" );
document.write( "2(x-y)	=16<BR>\n" );
document.write( "2x-2y	=	16	....................1<BR>\n" );
document.write( "							<BR>\n" );
document.write( "24/(x+y	)=	2.00<BR>\n" );
document.write( "2.00(x	+y)=	24.00<BR>\n" );
document.write( "2.00x+	2.00	y	=24.00	...............2<BR>\n" );
document.write( "Multiply (1) by	1						<BR>\n" );
document.write( "Multiply (2) by	1						<BR>\n" );
document.write( "we get							<BR>\n" );
document.write( "2	x	+	2	y	=	16	<BR>\n" );
document.write( "2	x	+	2	y	=	24	<BR>\n" );
document.write( "4	x	=	40				<BR>\n" );
document.write( "/	4						<BR>\n" );
document.write( "x	=	10.00	mph				<BR>\n" );
document.write( "							<BR>\n" );
document.write( "plug value of x in (1)							<BR>\n" );
document.write( "2.00	x		-2.00	y	=	16.00	<BR>\n" );
document.write( "20.00			-2.00	y	=	16.00	<BR>\n" );
document.write( "-2.00	y	=	16.00	-20.00			<BR>\n" );
document.write( "-2.00	y	=	-4.00				<BR>\n" );
document.write( "	y	=	2	mph			<BR>\n" );
document.write( "	Boat  	10	mph				<BR>\n" );
document.write( "	current     	2	mph				<BR>\n" );
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document.write( "</TD></TR></TABLE>\n" );