document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=421007>Question 421007</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A Farmhouse shelters 10 animals.  some are pigs and some are ducks.  Altogether there are 36 legs.  How many of each animal 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 #294029 by </B><A HREF=/tutors/aboutme.mpl?userid=japunzalan13><B>japunzalan13(1)</B></A><img src=\"/images/stars/iconNewId_16x16.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=japunzalan13><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=294029\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A Farmhouse shelters 10 animals.  some are pigs and some are ducks.  Altogether there are 36 legs.  How many of each animal are there? Answer:  8 pigs and 2 ducks. <BR>\n" );
document.write( "1.  (A)  p +  d = 10<BR>\n" );
document.write( "2.  (B) 4p + 2d = 36<BR>\n" );
document.write( "3.  Multiply equation (A) with -2; -2p minus -2d = -20<BR>\n" );
document.write( "4.  When subtracted from equation (B), this gives you.. 2p = 16, pigs = 8<BR>\n" );
document.write( "5.  Use this 8 to the second equation by substitution.. 2d = 4, ducks = 2<BR>\n" );
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