document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=860610>Question 860610</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Lindsay can row 10km/h in still water. If she can travel 20 km downstream in the same time that she can travel 5 km upstream, what is the speed 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 #518533 by </B><A HREF=/tutors/aboutme.mpl?userid=dkppathak><B>dkppathak(439)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=dkppathak><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=dkppathak><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=518533\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Lindsay can row 10km/h in still water. If she can travel 20 km downstream in the same time that she can travel 5 km upstream, what is the speed of the current?<BR>\n" );
document.write( "Let speed of water current is x  Km/hrs <BR>\n" );
document.write( "speed of Boat is 10 km/hrs <BR>\n" );
document.write( "speed in up stream will be 10-x km/hrs <BR>\n" );
document.write( "speed in down stream  will be 10+x km/hrs <BR>\n" );
document.write( "as per given condition <BR>\n" );
document.write( "time taken in up stream= 5/10-x<BR>\n" );
document.write( "time taken in down stream =20/10+x<BR>\n" );
document.write( "therefor time taken in both conditions are equal<BR>\n" );
document.write( "5/10-x=20/10+x  by cross multiplication<BR>\n" );
document.write( "5(10+x)=20(10-x)<BR>\n" );
document.write( "50+5x=200-20x<BR>\n" );
document.write( "5x+20x=200-50<BR>\n" );
document.write( "25x=150<BR>\n" );
document.write( "x=150/25<BR>\n" );
document.write( "x=6 km /hrs <BR>\n" );
document.write( "Answe 6 km/hrs   </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );