document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1056082>Question 1056082</A>: <I><SPAN STYLE=\"word-break: break-all;\">  Chuck kayaked 4 miles upstream in<BR>\n" );
document.write( "the same time it took him to kayak 10<BR>\n" );
document.write( "miles downstream. If the speed of the<BR>\n" );
document.write( "current is 3 mph, what is Chuck’s speed in<BR>\n" );
document.write( "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 #671253 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=671253\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> v1*t1=distance<BR>\n" );
document.write( "(x-3)*t1=4<BR>\n" );
document.write( "t1=4/(x-3)<BR>\n" );
document.write( "v2*t1=10<BR>\n" );
document.write( "(x+3)*t1=10<BR>\n" );
document.write( "t1=10/(x+3)<BR>\n" );
document.write( "set the two times, which are the same, equal to each other.<BR>\n" );
document.write( "4/(x-3)=10/(x+3)<BR>\n" );
document.write( "Cross-multiply<BR>\n" );
document.write( "10x-30=4x+12<BR>\n" );
document.write( "6x=42<BR>\n" );
document.write( "x=7 mph ANSWER<BR>\n" );
document.write( "downstream at 10 mph, counting current, and it takes him 1 hour to do 10 miles<BR>\n" );
document.write( "upstream at 4 mph, counting current, and it takes him 1 hour to do 4 miles.\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );