document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=69719>Question 69719</A>: <I><SPAN STYLE=\"word-break: break-all;\"> \"Rita rows 12 km upstream and 12 km downstream in three hours.  The speed of her boat in still water is 9 km/hr.  Find the speed of the stream.\"\r<BR>\n" );
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document.write( "Thanks. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #49670 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley75><B>checkley75(3666)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley75><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=49670\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 12/(9+x)+12/(9-x)=3<BR>\n" );
document.write( "[12(9-x)+12(9+x)]/(9+x)(9-x)=3<BR>\n" );
document.write( "(108-12x+108+12x)/(81-x^2)=3<BR>\n" );
document.write( "216/(81-x^2)=3<BR>\n" );
document.write( "3(81-x^2)=216<BR>\n" );
document.write( "243-3x^2-216=0<BR>\n" );
document.write( "-3x^2+27=0<BR>\n" );
document.write( "x^2=-27/-3<BR>\n" );
document.write( "x^2=9<BR>\n" );
document.write( "x=3 which is the current<BR>\n" );
document.write( "proof<BR>\n" );
document.write( "12/(9-3)+12(9+3)=3<BR>\n" );
document.write( "12/6+12/12=3<BR>\n" );
document.write( "2+1=3<BR>\n" );
document.write( "3=3<BR>\n" );
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