document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1034478>Question 1034478</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The Home Depot recently sold 23 watt CFL bulbs for $250 each and 42 watt CFL bulbs for $8.25. If River Memorial Hospital purchased 200 such bulbs for a total of $1305, how many of each type did they purchase? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #649134 by </B><A HREF=/tutors/aboutme.mpl?userid=robertb><B>robertb(5830)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=robertb><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=robertb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=649134\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I will make the assumption that you actually meant a 23-watt CFL bulb to be $2.50 each. It doesn't make sense that each one costs $250.\r<BR>\n" );
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document.write( "Let x = number of 23-watt CFL bulbs purchased,<BR>\n" );
document.write( "y = number of 42-watt CFL bulbs purchased.\r<BR>\n" );
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document.write( "With this in mind,you can come up with the system\r<BR>\n" );
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document.write( "2.50x + 8.25y = 1305,and<BR>\n" );
document.write( "x + y = 200\r<BR>\n" );
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document.write( "Using Cramer's rule,\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+abs%28matrix%282%2C2%2C1305%2C+8.25%2C200%2C1%29%29%2Fabs%28matrix%282%2C2%2C2.50%2C+8.25%2C1%2C1%29%29+=+60 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >,and \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+y=+abs%28matrix%282%2C2%2C2.50%2C+1305%2C1%2C200%29%29%2Fabs%28matrix%282%2C2%2C2.50%2C+8.25%2C1%2C1%29%29+=+140 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >.  <BR>\n" );
document.write( "Therefore 60 23-watt CFL bulbs were purchased, and 140 42-watt CFL bulbs purchased. </SPAN>\n" );
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