document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1124462>Question 1124462</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The density and strength of concrete are determined by the ratio of cement and aggregate <BR>\n" );
document.write( "(aggregate is sand, gravel, or crushed stone). Suppose that a contractor has 480 ft<BR>\n" );
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document.write( " of a dry <BR>\n" );
document.write( "concrete mixture that is 70% sand by volume. How much pure sand must be added to form a <BR>\n" );
document.write( "new mixture that is 75% sand by volume? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #740766 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39617)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=740766\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=480%2A0.7%2Bx=0.75%28x%2B480%29 ALIGN=MIDDLE  ALT=\"480%2A0.7%2Bx=0.75%28x%2B480%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=0.05%2A480=0.25x ALIGN=MIDDLE  ALT=\"0.05%2A480=0.25x\"   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=0.2%2A480 ALIGN=MIDDLE  ALT=\"x=0.2%2A480\"   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=96 ALIGN=MIDDLE  ALT=\"x=96\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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