document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=389537>Question 389537</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi...my cousin asked me to help him with this math problem...\r<BR>\n" );
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document.write( "\"The metal in the wires of Christmas lights is a combination of copper and lead. The State of California requires a warning label for any product that contains 25% or more lead. The current batch of metal for the wiring consists of 45% lead and weighs 2200 pounds. How many pounds of a 85% copper - 15% lead mixture should be added to avoid placing the label on the lights?\"\r<BR>\n" );
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document.write( "Oh my...lol...help...lol...thanks...*smiles*\r<BR>\n" );
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document.write( "I tried this one equation with 24% and got about 4911 pounds, and then I used 25% and I got 4400 pounds...? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #276064 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=276064\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You want to end up with less than 25% lead, so<BR>\n" );
document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x ALIGN=MIDDLE  ALT=\"x\"   DISABLED_style= \"max-width:90%; height:auto;\" > = pounds of mixture to be added<BR>\n" );
document.write( "In words:<BR>\n" );
document.write( "(pounds of lead in final mixture)/(total pounds of mixture) = 25%<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28.15x+%2B+.45%2A2200%29%2F%28x+%2B+2200%29+=+.25 ALIGN=MIDDLE  ALT=\"%28.15x+%2B+.45%2A2200%29%2F%28x+%2B+2200%29+=+.25\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.15x+%2B+990+=+.25%2A%28x+%2B+2200%29 ALIGN=MIDDLE  ALT=\".15x+%2B+990+=+.25%2A%28x+%2B+2200%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.15x+%2B+990+=+.25x+%2B+550 ALIGN=MIDDLE  ALT=\".15x+%2B+990+=+.25x+%2B+550\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.1x+=+440 ALIGN=MIDDLE  ALT=\".1x+=+440\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+4400 ALIGN=MIDDLE  ALT=\"x+=+4400\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "You must add more than 4400 pounds of mixture<BR>\n" );
document.write( "To check, I'll add 4401 pounds<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28.15%2A4401+%2B+.45%2A2200%29%2F%284401+%2B+2200%29+%3C+.25 ALIGN=MIDDLE  ALT=\"%28.15%2A4401+%2B+.45%2A2200%29%2F%284401+%2B+2200%29+%3C+.25\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28660.15+%2B+990%29%2F6601+%3C+.25 ALIGN=MIDDLE  ALT=\"%28660.15+%2B+990%29%2F6601+%3C+.25\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1650.15%2F6601+%3C+.25 ALIGN=MIDDLE  ALT=\"1650.15%2F6601+%3C+.25\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.249985+%3C+.25 ALIGN=MIDDLE  ALT=\".249985+%3C+.25\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "looks right </SPAN>\n" );
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