document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=906495>Question 906495</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A biologist has two brine solutions, one containing 7% salt and another containing 28% salt. How many milliliters of each solution should she mix to obtain 1 L of a solution that contains 19.6% salt? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #549884 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=549884\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a+b=1,<BR>\n" );
document.write( "0.07*a+0.28*b=0.196*1<BR>\n" );
document.write( "a=1-b<BR>\n" );
document.write( "0.07*(1-b)+0.28*b=0.196<BR>\n" );
document.write( "0.07-0.07b+0.28*b=0.196<BR>\n" );
document.write( "0.21*b=0.126<BR>\n" );
document.write( "b=0.6<BR>\n" );
document.write( "a=1-b<BR>\n" );
document.write( "a=0.4  liter at 7% 400 mL<BR>\n" );
document.write( "b=0.6  liter at 28% 600 mL<BR>\n" );
document.write( "check<BR>\n" );
document.write( "0.07*0.4+0.28*0.6=0.196*1<BR>\n" );
document.write( "0.028+0.168=0.196<BR>\n" );
document.write( "0.196=0.196<BR>\n" );
document.write( "ok<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );