document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=947780>Question 947780</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A contractor has a 12-poind mixture that is one-fourth cement and three-fourths sand. How much of a mixture that is half sand needs to be added to produce a mixture that is one-third cement? \r<BR>\n" );
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document.write( "I cannot figure out how to set this up at all </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #578394 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20850)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=578394\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "A contractor has a 12-poind mixture that is one-fourth cement and three-fourths sand. How much of a mixture that is half sand needs to be added to produce a mixture that is one-third cement? \r<BR>\n" );
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document.write( "We can write an equation based on the amt of cement\r<BR>\n" );
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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;\" >  be  amount of half cement mixture required\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%281%2F4%2912%29%2B+%281%2F2%29x+=+%281%2F3%29%28x%2B12%29 ALIGN=MIDDLE  ALT=\"%281%2F4%2912%29%2B+%281%2F2%29x+=+%281%2F3%29%28x%2B12%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Multiply equation by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=12+ ALIGN=MIDDLE  ALT=\"12+\"   DISABLED_style= \"max-width:90%; height:auto;\" >to get rid of the denominators\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cross%2812%293%281%2Fcross%284%29%2912%29%2Bcross%2812+%296%281%2Fcross%282%29%29x+=+cross%2812%294%281%2Fcross%283%29%29%28x%2B12%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3%2812%29+%2B+6x+=+4%28x%2B12%29 ALIGN=MIDDLE  ALT=\"3%2812%29+%2B+6x+=+4%28x%2B12%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=36+%2B+6x+=+4x+%2B+48 ALIGN=MIDDLE  ALT=\"36+%2B+6x+=+4x+%2B+48\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=6x+-+4x+=+48+-+36 ALIGN=MIDDLE  ALT=\"6x+-+4x+=+48+-+36\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2x+=+12 ALIGN=MIDDLE  ALT=\"2x+=+12\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+6 ALIGN=MIDDLE  ALT=\"x+=+6\"   DISABLED_style= \"max-width:90%; height:auto;\" >-> lb of the half cement mixture\r<BR>\n" );
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