document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1145206>Question 1145206</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Sam is a jewellery artist. She needs to mix metals to make her products. Pure gold is 24-karat and is very soft. It is usually mixed with other metals such as silver to make it harder. Sam has some 18-karat gold(18over24) and some 9-karat gold(9over24 pure gold). What mass of each type of gold should she use to make 600g of 15-karat gold?<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #766414 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39625)</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=766414\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Note that 18 karat is twice the concentration of 9 karat.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "w grams of the 18 karat gold<BR>\n" );
document.write( "600-w grams of the 9 karat gold\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=18w%2B9%28600-w%29=15%2A600 ALIGN=MIDDLE  ALT=\"18w%2B9%28600-w%29=15%2A600\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2w%2B600-w=5%2A200 ALIGN=MIDDLE  ALT=\"2w%2B600-w=5%2A200\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=w=1000-600 ALIGN=MIDDLE  ALT=\"w=1000-600\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28w=400%29 ALIGN=MIDDLE  ALT=\"highlight%28w=400%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >---------grams of the 18 karat gold\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=200 ALIGN=MIDDLE  ALT=\"200\"   DISABLED_style= \"max-width:90%; height:auto;\" >---------------grams of the 9 karat gold </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );