document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=720744>Question 720744</A>: <I><SPAN STYLE=\"word-break: break-all;\"> This is a real problem.  I make cast bullets from various mixtures of lead (Pb), tin (Sn) and antimony (An).I have a one-pound piece of Pb-Sn mixture, 30% tin and 70% lead.  I want to know how much lead I have to add to the one-pound piece to make the mixture 4% tin and 96% lead. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #441939 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=441939\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Be careful with those bullets- just kidding<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 lead to be added to mixture<BR>\n" );
document.write( "You start out with:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.3%2A1+=+.3+ ALIGN=MIDDLE  ALT=\"+.3%2A1+=+.3+\"   DISABLED_style= \"max-width:90%; height:auto;\" > pounds of tin<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.7%2A1+=+.7+ ALIGN=MIDDLE  ALT=\"+.7%2A1+=+.7+\"   DISABLED_style= \"max-width:90%; height:auto;\" > pounds of lead<BR>\n" );
document.write( "------------<BR>\n" );
document.write( "( total pounds of lead ) / ( total pounds of metal ) = .96<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+.7+%2B+x+%29+%2F+%28+1+%2B+x+%29+=+.96+ ALIGN=MIDDLE  ALT=\"+%28+.7+%2B+x+%29+%2F+%28+1+%2B+x+%29+=+.96+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.7+%2B+x+=+.96%2A%28+1+%2B+x+%29+ ALIGN=MIDDLE  ALT=\"+.7+%2B+x+=+.96%2A%28+1+%2B+x+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.7+%2B+x+=+.96+%2B+.96x+ ALIGN=MIDDLE  ALT=\"+.7+%2B+x+=+.96+%2B+.96x+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.04x+=+.96+-+.7+ ALIGN=MIDDLE  ALT=\"+.04x+=+.96+-+.7+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.04x+=+.26++ ALIGN=MIDDLE  ALT=\"+.04x+=+.26++\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+6.5+ ALIGN=MIDDLE  ALT=\"+x+=+6.5+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "If you add 6.5 pounds of lead, you will have<BR>\n" );
document.write( "4% tin, 96% lead<BR>\n" );
document.write( "check:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+.7+%2B+x+%29+%2F+%28+1+%2B+x+%29+=+.96+ ALIGN=MIDDLE  ALT=\"+%28+.7+%2B+x+%29+%2F+%28+1+%2B+x+%29+=+.96+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+.7+%2B+6.5+%29+%2F+%28+1+%2B+6.5+%29+=+.96+ ALIGN=MIDDLE  ALT=\"+%28+.7+%2B+6.5+%29+%2F+%28+1+%2B+6.5+%29+=+.96+\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+7.2+%2F+7.5+=+.96+ ALIGN=MIDDLE  ALT=\"+7.2+%2F+7.5+=+.96+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+7.2+=+.96%2A7.5+ ALIGN=MIDDLE  ALT=\"+7.2+=+.96%2A7.5+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+7.2+=+7.2+ ALIGN=MIDDLE  ALT=\"+7.2+=+7.2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );