document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=339805>Question 339805</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a sterilization tank contains 120 gallons of a solution of 6% bleach mixed with pure distilled water. for complete sterilization, the solution only needs to be at 4%. how much of the solution needs to be drained and replaced with water to reduce the concentration of bleach.\r<BR>\n" );
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document.write( "note:: u want to still have 120 gallons of solution when you are finished diluting. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #243422 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=243422\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a sterilization tank contains 120 gallons of a solution of 6% bleach mixed with pure distilled water. for complete sterilization, the solution only needs to be at 4%. how much of the solution needs to be drained and replaced with water to reduce the concentration of bleach. <BR>\n" );
document.write( "note:: u want to still have 120 gallons of solution when you are finished diluting.<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "bleach - bleach + bleach = bleach<BR>\n" );
document.write( "0.06*120 - 0.06x + 0x = 0.04*120<BR>\n" );
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document.write( "Multiply thru by 100 to get:<BR>\n" );
document.write( "6*120 - 6x + 0 = 4*120<BR>\n" );
document.write( "6x = 2*120<BR>\n" );
document.write( "x = 40 gallons (amt. of 6% solution that must be replaced by water)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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