document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=9800>Question 9800</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 1. A health clinic uses a solution of bleach to sterilize petri dishes in which cultures are grown. The sterilization tank contains 100 gallons 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( "2. A bottle contains 750 milliliters of fruit punch with a concentration of 50% pure fruit juice. Jill drinks 100 milliliters of the punch and then refills the bottle with an equal amount of a cheaper brand of punch. If the concentration of juice in the bottle is now reduced to 48%, what was the concentration in the punch that Jill added?<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 #5296 by </B><A HREF=/tutors/aboutme.mpl?userid=Earlsdon><B>Earlsdon(6294)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Earlsdon><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=5296\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1) Original bleach solution is: 100 gallons of 2% concentration. Remove x gallons of 2% concentration and add x gallons of 100% bleach to get 100 gallons of 5% concentration.  Let's set up the equation for this: Change percents to decimals.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=100%280.02%29+-+x%280.02%29+%2B+x%281%29+=+100%280.05%29 ALIGN=MIDDLE  ALT=\"100%280.02%29+-+x%280.02%29+%2B+x%281%29+=+100%280.05%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Simplify and solve for x.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2+-+0.02x+%2B+x+=+5 ALIGN=MIDDLE  ALT=\"2+-+0.02x+%2B+x+=+5\"   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=2+%2B+0.98x+=+5 ALIGN=MIDDLE  ALT=\"2+%2B+0.98x+=+5\"   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=0.98x+=+3 ALIGN=MIDDLE  ALT=\"0.98x+=+3\"   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+=+3.06 ALIGN=MIDDLE  ALT=\"x+=+3.06\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Approximately 3.06 gallons of the original solution should be drained and replaced with bleach to attain the recommended level of concentration of 5%.\r<BR>\n" );
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document.write( "2)Original fruit punch is 750 ml of 50% concentration of pure fruit juice.  Jill removes 100 ml of the 50% concentration and add 100 ml of x% concentration to get 750 ml of 48% concentration. Change the percents to decimals and set up the equation:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=750%280.5%29+-+100%280.5%29+%2B+100%28x%29+=+750%280.48%29 ALIGN=MIDDLE  ALT=\"750%280.5%29+-+100%280.5%29+%2B+100%28x%29+=+750%280.48%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Simplify and solve for x.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=375+-+50+%2B+100x+=+360 ALIGN=MIDDLE  ALT=\"375+-+50+%2B+100x+=+360\"   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=100x+=+35 ALIGN=MIDDLE  ALT=\"100x+=+35\"   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+=+0.35 ALIGN=MIDDLE  ALT=\"x+=+0.35\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "0.35 = 35%\r<BR>\n" );
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document.write( "The cheaper brand of punch had 35% concentration of pure fruit juice.\r<BR>\n" );
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