document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=894804>Question 894804</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The manager of an appliance store purchased a number of identical lamps for $8000.After selling all but 4 of the lamps at an average profit of $100 each, the investment of $8000 had been regained. How many lamps did the manager purchase? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #542352 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39617)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=542352\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> THE INVESTMENT OF $8000 REGAINED.\r<BR>\n" );
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document.write( "n=number of lamps purchased.<BR>\n" );
document.write( "n-4, number of lamps sold.<BR>\n" );
document.write( "PROFIT, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=p=100%2A%28n-4%29 ALIGN=MIDDLE  ALT=\"p=100%2A%28n-4%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "Cost was <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=c=8000 ALIGN=MIDDLE  ALT=\"c=8000\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=p=r-c ALIGN=MIDDLE  ALT=\"p=r-c\"   DISABLED_style= \"max-width:90%; height:auto;\" >, profit is revenue minus cost.  Revenue is r.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=100%28n-4%29=r-8000 ALIGN=MIDDLE  ALT=\"100%28n-4%29=r-8000\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Something is still missing. </SPAN>\n" );
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