document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=311236>Question 311236</A>: <I><SPAN STYLE=\"word-break: break-all;\"> how much pure alcohol must be added to 15 oz of a 60% solution of rubbing alcohol to change it to a 70% solution? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #222579 by </B><A HREF=/tutors/aboutme.mpl?userid=unlockmath><B>unlockmath(1688)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=unlockmath><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=unlockmath><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=222579\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hello, <BR>\n" );
document.write( "Let's set this up as a proportion. <BR>\n" );
document.write( "15/.6=n/.7  We can cross multiply to get:<BR>\n" );
document.write( "10.5=.6n Divide both sides by .6 to get:<BR>\n" );
document.write( "n=17.5<BR>\n" );
document.write( "So we need to add 2.5 oz. <BR>\n" );
document.write( "RJ  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );