document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=216026>Question 216026</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A bar of metal contains 10% silver. Another bar contains 15% silver. How many kilograms of each must be taken to make a 10 kilogram bar containing 12% silver. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #163172 by </B><A HREF=/tutors/aboutme.mpl?userid=RAY100><B>RAY100(1637)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=RAY100><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=163172\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let  x =  amt  at  10%,,,and y= amt  at 15%<BR>\n" );
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document.write( "(1) x + y = 10,,,,,,,or  y=10-x<BR>\n" );
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document.write( "(2)  .10*x +.15*y = .12*10,,,,,,,,,silver  balance<BR>\n" );
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document.write( "subst  from  (1)<BR>\n" );
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document.write( ".1x +.15(10-x) = .12*10<BR>\n" );
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document.write( ".1x +1.5 - .15x = 1.2,,,,,combine  like  terms<BR>\n" );
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document.write( "-.05x = -.3<BR>\n" );
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document.write( "x=6 kg,,,,,,,,,,,,,,y=10-6=4  kg<BR>\n" );
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document.write( "check,,,,,.1(6) +.15(4) = .6 + .6 =1.2 = .12*10 ,,,,,,ok </SPAN>\n" );
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