document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=142563>Question 142563</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/9780321501073/algebrahomeworkh>a survey of mathematics with applications</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Dorian and Dingo have a petting zoo with 12 animals, and all of them are either sheep or goats.  They have twice as many sheep as goats.  How many goats do they have? <BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #103771 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=103771\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Dorian and Dingo have a petting zoo with 12 animals, and all of them are either sheep or goats.  They have twice as many sheep as goats.  How many goats do they have? <BR>\n" );
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document.write( "Let # of goats be \"x\"; Let # of sheep by \"y\"<BR>\n" );
document.write( "EQUATIONS:<BR>\n" );
document.write( "x + y = 12<BR>\n" );
document.write( "y-2x = 0<BR>\n" );
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document.write( "Solve by substitution:<BR>\n" );
document.write( "y = 2x <BR>\n" );
document.write( "x + 2x = 12<BR>\n" );
document.write( "3x = 12<BR>\n" );
document.write( "x = 4 (# of goats)<BR>\n" );
document.write( "y = 8 (# of sheep)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.  </SPAN>\n" );
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