document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=816215>Question 816215</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A boat can travel 12 miles upstream in the same amount of time it takes to travel 18 miles downstream. If the current in the river is 3 miles per hour, find the speed of the boat in still water. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #491411 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=491411\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> boat   	speed	x	mph				<BR>\n" );
document.write( "current     	speed	3	mph				<BR>\n" );
document.write( "..							<BR>\n" );
document.write( "against	current     	x	-	3	mph		<BR>\n" );
document.write( "with	current     	x   	+	3	mph		<BR>\n" );
document.write( "							<BR>\n" );
document.write( "Distance against	current     	12					<BR>\n" );
document.write( "Distance with	current     	18					<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( "12	/(x-	3	)=	18	/(x+	3	)<BR>\n" );
document.write( "12	*(x+	3	)=	18	*(x-	3	)<BR>\n" );
document.write( "12	x  	+	36	=	18	x	-54<BR>\n" );
document.write( "12	x  	-18	x   	=	-54	+	-36<BR>\n" );
document.write( "-6	x  	=	-90				<BR>\n" );
document.write( "/	-6						<BR>\n" );
document.write( "	x=	15	mph				<BR>\n" );
document.write( "m.ananth@hotmail.ca							<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );