document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=906634>Question 906634</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A chemist has two solutions, one is 30% alcohol and the other 90% alcohol. How much of each solution should be mixed together to make 400liters of solution that is 54% alcohol?   <BR>\n" );
document.write( "a+b=400     .3*a+.9*b=.54*400    a=400*b   .3*(400-b)+.9*b=.54   .3-.3+.9*b=.9 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #549972 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=549972\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a+b=400,<BR>\n" );
document.write( "0.3*a+0.9*b=0.54*400<BR>\n" );
document.write( "a=400-b<BR>\n" );
document.write( "0.3*(400-b)+0.9*b=216<BR>\n" );
document.write( "120-0.3b+0.9*b=216<BR>\n" );
document.write( "0.6*b=96<BR>\n" );
document.write( "b=160<BR>\n" );
document.write( "a=400-b<BR>\n" );
document.write( "a=240  liter at 30%<BR>\n" );
document.write( "b=160  liter at 90%<BR>\n" );
document.write( "check<BR>\n" );
document.write( "0.3*240+0.9*160=0.54*400<BR>\n" );
document.write( "72+144=216<BR>\n" );
document.write( "216=216<BR>\n" );
document.write( "ok<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );