document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1031986>Question 1031986</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Mrs. McDonald has a farm with ducks and pigs. There are 27 heads and 84 legs. How many ducks and pigs are on Mrs. McDonald's farm? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #646670 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=646670\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Mrs. McDonald has a farm with ducks and pigs. There are 27 heads and 84 legs. How many ducks and pigs are on Mrs. McDonald's farm? <BR>\n" );
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document.write( "Legs Eq:: 2d + 4p = 84 legs<BR>\n" );
document.write( "Heads Eq:  d + p = 27 heads<BR>\n" );
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document.write( "Modify for elimination::<BR>\n" );
document.write( "d + 2p = 42<BR>\n" );
document.write( "d + p = 27<BR>\n" );
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document.write( "Subtract and solve for \"p\"::<BR>\n" );
document.write( "p = 15 (# of pigs)<BR>\n" );
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document.write( "Solve for \"d\"<BR>\n" );
document.write( "d = 27-15 = 12 (# of ducks)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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