document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=715489>Question 715489</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A metal alloy weighing 3 mg and containing 40% iron is melted and mixed with 12 mg of pure iron. What percent of the resulting alloy is iron?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #439464 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=439464\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A metal alloy weighing 3 mg and containing 40% iron is melted and mixed with 12 mg of pure iron. What percent of the resulting alloy is iron? <BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "iron + iron = iron<BR>\n" );
document.write( "0.40*3 + 1*12 = x(3+12)<BR>\n" );
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document.write( "40*3 + 1200 = 100x(15)<BR>\n" );
document.write( "120+1200 = 1500x\r<BR>\n" );
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document.write( "1320 = 1500x<BR>\n" );
document.write( "x = 1320/1500<BR>\n" );
document.write( "x = 0.88 = 88%<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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