document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1036070>Question 1036070</A>: <I><SPAN STYLE=\"word-break: break-all;\"> David signed a contract to build 40 bird houses for the local pet shop. The owner wants them ready within the month. For every one David produces he will receive $20.00 and for every one he fails to produce he will be fined $8.00. At the end of the month David received $380.00. How many bird houses did he build?\r<BR>\n" );
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document.write( "Answer: 25 (How?) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #650664 by </B><A HREF=/tutors/aboutme.mpl?userid=fractalier><B>fractalier(6550)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=fractalier><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=fractalier><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=650664\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Call the number he completed, x.  Then the number he didn't complete would be 40-x.  Do you see that?  If you do, we then write<BR>\n" );
document.write( "20x - 8(40-x) = 380<BR>\n" );
document.write( "20x - 320 + 8x = 380<BR>\n" );
document.write( "28x - 320 = 380<BR>\n" );
document.write( "28x = 700<BR>\n" );
document.write( "x = 700/28 = 25 bird houses he completed </SPAN>\n" );
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