document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=505697>Question 505697</A>: <I><SPAN STYLE=\"word-break: break-all;\"> My algebra 2 question on my homework worksheet is this:\r<BR>\n" );
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document.write( "\"A health clinic uses a solution of bleach to sterilize Petri dishes in which cultures are grown. The sterilization tank contains 100 gal of a solution of 2% ordinary household bleach mixed with pure distilled water. New research indicates that the concentration of bleach should be 5% for complete sterilization. How much of the solution should be drained and replaced with bleach to increase the bleach content to the recommended level?\"\r<BR>\n" );
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document.write( "How would you solve that? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #339946 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=339946\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A health clinic uses a solution of bleach to sterilize Petri dishes in which cultures are grown.<BR>\n" );
document.write( " The sterilization tank contains 100 gal of a solution of 2% ordinary household bleach mixed with pure distilled water.<BR>\n" );
document.write( " New research indicates that the concentration of bleach should be 5% for complete sterilization. <BR>\n" );
document.write( "How much of the solution should be drained and replaced with bleach to increase the bleach content to the recommended level?\"<BR>\n" );
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document.write( "Let x = amt of the 2% solution to be removed, and the amt of bleach to added<BR>\n" );
document.write( "(Pure bleach would be 1x)<BR>\n" );
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document.write( ".02(100-x) + 1x = .05(100)<BR>\n" );
document.write( "2 - .02x + 1x = 5<BR>\n" );
document.write( "-.02x + 1x = 5 - 2<BR>\n" );
document.write( ".98x = 3<BR>\n" );
document.write( "x = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3%2F.98 ALIGN=MIDDLE  ALT=\"3%2F.98\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "x ~ 3.06 gal of the 2% solution removed and 3.06 gal of pure bleach to be added<BR>\n" );
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document.write( "We can prove that<BR>\n" );
document.write( ".02(100-3.06) + 3.06 = .05(100)<BR>\n" );
document.write( ".02(96.94) + 3.06 = 5<BR>\n" );
document.write( "1.9388 + 3.06 = 4.9988 ~ 5<BR>\n" );
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