document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=21619>Question 21619</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A chemist needs 10 liters of a 50% salt solution.  All she has available is a 20% salt solution and a 70% salt solution.  How much of each of the two solutions should she mix to obtain her desired solution? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #11589 by </B><A HREF=/tutors/aboutme.mpl?userid=venugopalramana><B>venugopalramana(3286)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=venugopalramana><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.geocities.com/venugopalramana/FREE_MATHS_ASSISTANCE.html valign=middle><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=11589\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A chemist needs 10 liters of a 50% salt solution.  All she has available is a 20% salt solution and a 70% salt solution.  How much of each of the two solutions should she mix to obtain her desired solution?<BR>\n" );
document.write( "LET X LITRES  OF 20% SOLUTION BE REQUIRED...SINCE TOTAL IS 10 LITRES ,WE HAVE TO ADD 10-X LITRES OF 70% SOLUTION..SO TAKING A SALT BALANCE <BR>\n" );
document.write( "SALT IN X LITRES OF 20 % SOLUTION......=X*20/100=0.2X<BR>\n" );
document.write( "SALT IN 10-X LITRES OF 10 % SOLUTION.. =(10-X)*70/100=7-0.7X<BR>\n" );
document.write( "SALT IN 10 LITRES OF FINAL 50 % SOLUTION =10*50/100=5<BR>\n" );
document.write( "HENCE <BR>\n" );
document.write( "0.2X+7-0.7X=5<BR>\n" );
document.write( "0.7X-0.2X=7-5=2<BR>\n" );
document.write( "0.5X=2<BR>\n" );
document.write( "X=2/0.5=20/5=4 LITRES OF 20 % SWOLUTION AND 10-4=6 LITRES OF 70% ARE NEEDED TO BE MIXED  TO GET 10 LITRES OF 50% SOLUTION <BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );