document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=910835>Question 910835</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a chemist needs 16 liters of a 15% solution. she has two saline solutions with strength 12% and 20%. find the amount of 12% solution and the amount of 20% solution she should add to get 16 liters of a 15% solution. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #552689 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=552689\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> We need a total of 16 liters at 15%<BR>\n" );
document.write( "We want to know how many liters at 12% to mix with 20%<BR>\n" );
document.write( "a+b=16,<BR>\n" );
document.write( "0.12*a+0.2*b=0.15*16<BR>\n" );
document.write( "a=16-b<BR>\n" );
document.write( "0.12*(16-b)+0.2*b=2.4<BR>\n" );
document.write( "1.92-0.12b+0.2*b=2.4<BR>\n" );
document.write( "0.08*b=0.48<BR>\n" );
document.write( "b=6<BR>\n" );
document.write( "a=16-b<BR>\n" );
document.write( "a=10 liters at 12%<BR>\n" );
document.write( "b=6 liters at 20%<BR>\n" );
document.write( "check<BR>\n" );
document.write( "0.12*10+0.2*6=0.15*16<BR>\n" );
document.write( "1.2+1.2=2.4<BR>\n" );
document.write( "2.4=2.4<BR>\n" );
document.write( "ok<BR>\n" );
document.write( "codemx1\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );