document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=819041>Question 819041</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A chemist has 100 liters of 20% sodium chloride solution. She intends to drain a certain number of liters and replace with a more concentrated solution.\r<BR>\n" );
document.write( "\n" );
document.write( "a) How much of this solution should she drain and replace with 70% sodium chloride if she wants a 35% sodium chloride solution? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #492909 by </B><A HREF=/tutors/aboutme.mpl?userid=TimothyLamb><B>TimothyLamb(4379)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=TimothyLamb><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=TimothyLamb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=492909\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 20(100 - v) + 70v = 35(100)<BR>\n" );
document.write( "2000 - 20v + 70v = 3500<BR>\n" );
document.write( "50v = 1500<BR>\n" );
document.write( "---<BR>\n" );
document.write( "v = 30<BR>\n" );
document.write( "---<BR>\n" );
document.write( "answer:<BR>\n" );
document.write( "drain 30 liters, and replace with 30 liters of 70% sodium chloride solution<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Solve and graph linear equations:<BR>\n" );
document.write( "https://sooeet.com/math/linear-equation-solver.php<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Solve quadratic equations, quadratic formula:<BR>\n" );
document.write( "https://sooeet.com/math/quadratic-formula-solver.php<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Calculate and graph the linear regression of any data set:<BR>\n" );
document.write( "https://sooeet.com/math/linear-regression.php </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );