document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=710277>Question 710277</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 2 dogs together weigh 36 pounds Fido weighs twice as much as Rex haw much do both dogs weigh? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #436968 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39617)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=436968\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You were already given the answer to the question.  Both dogs still weigh 36 pounds.  \r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "What you could also answer is, how much does each dog weigh.  If you were interested in that question, you could proceed this way:\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "f for fido, r for rex.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f=2r ALIGN=MIDDLE  ALT=\"f=2r\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%2Br=36 ALIGN=MIDDLE  ALT=\"f%2Br=36\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "A simple substitution for f would be most logical.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28f%29%2Br=36 ALIGN=MIDDLE  ALT=\"%28f%29%2Br=36\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2r%2Br=36 ALIGN=MIDDLE  ALT=\"2r%2Br=36\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "3r=36, so r=12.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Rex is 12 pounds, Fido is 24 pounds. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );