document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=548075>Question 548075</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A river has a current of 4 km per hour. Find the rate of a boat in still water, if the boat goes 40 km downstream in that same time it takes to go 24 km upstream </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #356754 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=356754\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Boat speed		x	kph				<BR>\n" );
document.write( "current speed 		4	kph				<BR>\n" );
document.write( "..							<BR>\n" );
document.write( "against wind   		x	-	4	kph		<BR>\n" );
document.write( "with wind  		x   	+	4	kph		<BR>\n" );
document.write( "							<BR>\n" );
document.write( "Distance against 	current	24					<BR>\n" );
document.write( "Distance with 	current	40					<BR>\n" );
document.write( "Time = same	equate the time against with time with current						<BR>\n" );
document.write( "t=d/r							<BR>\n" );
document.write( "24	/(x-	4	)=	40	/(x+	4	)<BR>\n" );
document.write( "24	*(x+	4	)=	40	*(x-	4	)<BR>\n" );
document.write( "24	x  	+	96	=	40	x	-160<BR>\n" );
document.write( "40	x  	-24	x   	=	160	+	96<BR>\n" );
document.write( "16	x  	=	256				<BR>\n" );
document.write( "/	16						<BR>\n" );
document.write( "	x=	16	kph				<BR>\n" );
document.write( "m.ananth@hotmail.ca							<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );