document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=248129>Question 248129</A>: <I><SPAN STYLE=\"word-break: break-all;\"> how many liters of water must be added to 8 liters of a 40% acid solution to obtain a 10% acid solution?<BR>\n" );
document.write( "How many kg of pure salt must be added to 20 kilograms of a 10% salt solution to obtain a 25% salt solution? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #181094 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=181094\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> how many liters of water must be added to 8 liters of a 40% acid solution to obtain a 10% acid solution?<BR>\n" );
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document.write( "Let x = amt of water<BR>\n" );
document.write( "a simple \"amt of acid\" equation (the amt of acid does not change only the percent)<BR>\n" );
document.write( ".40(8) = .10(x+8)<BR>\n" );
document.write( "3.2 = .10x + .8<BR>\n" );
document.write( "3.2 - .8 = .1x<BR>\n" );
document.write( "2.4 = .1x<BR>\n" );
document.write( "x = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2.4%2F.1 ALIGN=MIDDLE  ALT=\"2.4%2F.1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "x = 24 liters of pure water required<BR>\n" );
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document.write( "Check for equal acid: <BR>\n" );
document.write( ".4(8) = .10(24+8)<BR>\n" );
document.write( "3.2 = .1(32)<BR>\n" );
document.write( ";<BR>\n" );
document.write( ";<BR>\n" );
document.write( "How many kg of pure salt must be added to 20 kilograms of a 10% salt solution to obtain a 25% salt solution?<BR>\n" );
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document.write( "Let x = amt of pure salt<BR>\n" );
document.write( ".10(20) + x = .25(x+20)<BR>\n" );
document.write( "2 + x = .25x + 5<BR>\n" );
document.write( "x - .25x = 5 - 2<BR>\n" );
document.write( ".75x = 3<BR>\n" );
document.write( "x = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3%2F.75 ALIGN=MIDDLE  ALT=\"3%2F.75\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "x = 4 kg of salt to be added<BR>\n" );
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document.write( "Check<BR>\n" );
document.write( ".10(20) + 4 = .25(4+20)<BR>\n" );
document.write( "2 + 4 = .25(24)<BR>\n" );
document.write( "6 = 6 </SPAN>\n" );
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