document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=906678>Question 906678</A>: <I><SPAN STYLE=\"word-break: break-all;\"> You need 240 mL of a 45% alcohol solution. On hand you have a 30 % alcohol mixture and a 70% alcohol mixture. How much of each mixture will you need to obtain the desired amount? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #549998 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=549998\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> wt= mL dn=100 sn1= sn2=%<BR>\n" );
document.write( "a+b=240,<BR>\n" );
document.write( "0.3*a+0.7*b=0.45*240<BR>\n" );
document.write( "a=240-b<BR>\n" );
document.write( "0.3*(240-b)+0.7*b=108<BR>\n" );
document.write( "72-0.3b+0.7*b=108<BR>\n" );
document.write( "0.4*b=36<BR>\n" );
document.write( "b=90<BR>\n" );
document.write( "a=240-b<BR>\n" );
document.write( "a=150  mL at 30%<BR>\n" );
document.write( "b=90  mL at 70%<BR>\n" );
document.write( "check<BR>\n" );
document.write( "0.3*150+0.7*90=0.45*240<BR>\n" );
document.write( "45+63=108<BR>\n" );
document.write( "108=108<BR>\n" );
document.write( "ok<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );