document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=393447>Question 393447</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A particular farm has cows and ducks. There are a total of 79 heads and 212 legs. How many cows are there and how many ducks are there? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #279233 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=279233\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let c=number of cows and d=number of ducks.<BR>\n" );
document.write( "4c+2d=212<BR>\n" );
document.write( "c+d=79<BR>\n" );
document.write( "c=79-d<BR>\n" );
document.write( "4(79-d)+2d=212<BR>\n" );
document.write( "316-4d+2d=212<BR>\n" );
document.write( "-2d=-104<BR>\n" );
document.write( "d=52<BR>\n" );
document.write( "c=27<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Ed </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );