document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=570821>Question 570821</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A boat can travel on a river 10 miles upstream in the same time it takes to travel 14 miles downstream.  Find the speed of the current if the speed of the boat in still water is 18 miles per hour </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #367786 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16949)</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=367786\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Boat speed	=	18	mph										<BR>\n" );
document.write( "current speed 	=	x	mph										<BR>\n" );
document.write( "wind speed													<BR>\n" );
document.write( "speed against	current	18	-	x								0.07	<BR>\n" );
document.write( "speed with	current	18	+	x									<BR>\n" );
document.write( "													<BR>\n" );
document.write( "Distance against	wind	10	km										<BR>\n" );
document.write( "Distance with 	wind	14	km										<BR>\n" );
document.write( "													<BR>\n" );
document.write( "t=d/r	time against = time with												<BR>\n" );
document.write( "10/(18-x)=	14/(18+x)<BR>\n" );
document.write( "10(18+x	)=14(18	-x)			<BR>\n" );
document.write( "180+10x	=252-14	x 					<BR>\n" );
document.write( "14x+10	x	=	72								<BR>\n" );
document.write( "24	x	=	72										<BR>\n" );
document.write( "/	24												<BR>\n" );
document.write( "x 	=	3	mph	current speed 								<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );