document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=162125>Question 162125</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Jack needs to prepare 12 ounces of a 9% hydrochloric acid solution. the only solution she currently has avaliable are 4% and 12% hydrochloric acid. How much should she use of each solution to obtain the needed solution?   </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #119485 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=119485\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .12x+.04(12-x)=.09*12<BR>\n" );
document.write( ".12x+.48-.04x=1.08<BR>\n" );
document.write( ".08x=1.08-.48<BR>\n" );
document.write( ".08x=.6<BR>\n" );
document.write( "x=.6/.08<BR>\n" );
document.write( "x=7.5 oz. of 12% acid is used.<BR>\n" );
document.write( "12-7.5=4.5 oz of 4% acid is used.<BR>\n" );
document.write( "proof:<BR>\n" );
document.write( ".12*7.5+.04*4.5=1.08<BR>\n" );
document.write( ".9+.18=1.08<BR>\n" );
document.write( "1.09=1.08 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );