document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=159330>Question 159330</A>: <I><SPAN STYLE=\"word-break: break-all;\"> how much pure acid should be mixed with 8 gallons of 50% acid solution to get an 80% solution? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #117462 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=117462\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">     how much pure acid should be mixed with 8 gallons of 50% acid solution to get an 80% solution?<BR>\n" );
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document.write( "Let x = amount of pure acid added<BR>\n" );
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document.write( "\"amt of acid added\" + \"amt of acid in 50%\" = \"desired amt of acid in mix\"<BR>\n" );
document.write( "x + .50(8) = .80(x+8)<BR>\n" );
document.write( "x + 4 = .80x + 6.4<BR>\n" );
document.write( ".20x = 2.4<BR>\n" );
document.write( "x = 12 gallons<BR>\n" );
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