document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=158201>Question 158201</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0132383578/algebrahomeworkh>Intermediate Algebra for College Students</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Painting Sales: Joseph DeGuizman, an artist, sells both large paintings and small paintings. He sells his small paintings for $60 and his large paintings for $180. At the end of the week he determined that the total amount he made selling 12 paintings was $1200. Determine the number of small and the number of large paintings that he sold.\r<BR>\n" );
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document.write( "---I know the answers, more importantly, I cant understand how to setup the equation(s) to get the answers. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #116584 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=116584\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> S+L=12 OR S=12-L<BR>\n" );
document.write( "60S+180L=1,200<BR>\n" );
document.write( "SUBSTITUTING (12-L) FOR S IN THE SECOND EQUATION WE GET:<BR>\n" );
document.write( "60(12-L)+180L=1,200<BR>\n" );
document.write( "720-60L+180L=1,200<BR>\n" );
document.write( "120L=1,200-720<BR>\n" );
document.write( "120L=480<BR>\n" );
document.write( "L=480/120<BR>\n" );
document.write( "L=4 LARGE PAINTING SOLD.<BR>\n" );
document.write( "S=4=12<BR>\n" );
document.write( "S=12-4<BR>\n" );
document.write( "S=8 SMALL PAINTINGS SOLD.<BR>\n" );
document.write( "PROOF:<BR>\n" );
document.write( "60*8+4*180=1,200<BR>\n" );
document.write( "480+720=1,200<BR>\n" );
document.write( "1,200=1,200<BR>\n" );
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