document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=938021>Question 938021</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a man can row 15 km downstream in 1 hour and upstream for the same distance in 3 hours.Using the same speed,how far can the man row in 3 hours 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 #571371 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=571371\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a man can row 15 km downstream in 1 hour and upstream for the same distance in 3 hours.Using the same speed,how far can the man row in 3 hours in still water?<BR>\n" );
document.write( "let x=speed of rowboat in still water<BR>\n" );
document.write( "let c=speed of current<BR>\n" );
document.write( "x+c=speed of rowboat downstream<BR>\n" );
document.write( "x-c=speed of rowboat upstream<BR>\n" );
document.write( "travel time*speed=distance<BR>\n" );
document.write( "..<BR>\n" );
document.write( "3(x-c)=15<BR>\n" );
document.write( "1(x+c)=15<BR>\n" );
document.write( "..<BR>\n" );
document.write( "3x-3c=15<BR>\n" );
document.write( "x+c=15<BR>\n" );
document.write( "..<BR>\n" );
document.write( "3x-3c=15<BR>\n" );
document.write( "3x+3c=45 (mult. eq. by 3)<BR>\n" );
document.write( "add<BR>\n" );
document.write( "6x=60<BR>\n" );
document.write( "x=10 km/h=speed of rowboat in still water<BR>\n" );
document.write( "how far can the man row in 3 hours in still water? 30 km<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );