document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=159103>Question 159103</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a contractor mixes concrete from bags of pre-mix for small jobs. How many bags with 11% cement should he mix with 10 bags of 12.5% cement to produce a mix containing 12% cement?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #117221 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=117221\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .11x+.125*10=.12(10+x)<BR>\n" );
document.write( ".11x+1.25=1.2+.12x<BR>\n" );
document.write( ".11x-.12x=1.2-1.25<BR>\n" );
document.write( "-.01x=-.05<BR>\n" );
document.write( "x=-.05/-.01<BR>\n" );
document.write( "x=5 bags of 12% is used.<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( ".11*5+.125*10=.12(10+5)<BR>\n" );
document.write( ".55+1.25=.12*15<BR>\n" );
document.write( "1.8=1.8\r<BR>\n" );
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