document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=311512>Question 311512</A>: <I><SPAN STYLE=\"word-break: break-all;\"> how much acid 90% pure must be added to 15 0z. of 60% acid to make a mixture which is 75% pure<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 #222811 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=222811\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> how much acid 90% pure must be added to 15 0z. of 60% acid to make a mixture which is 75% pure<BR>\n" );
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document.write( "Let x = amount of 90% acid added<BR>\n" );
document.write( "then<BR>\n" );
document.write( ".90x + .60(15) = .75(x+15)<BR>\n" );
document.write( ".90x + 9 = .75x+11.25<BR>\n" );
document.write( ".15x + 9 = 11.25<BR>\n" );
document.write( ".15x = 2.25<BR>\n" );
document.write( "x = 15 Oz. </SPAN>\n" );
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