document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=129672>Question 129672</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0395676088/algebrahomeworkh>Algebra structure and meathod</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> A chemist mixed a 20% acid solution with a 60% acid solution to make 10 L of a 30% solution. How many liters of the 60% solution were used? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #94659 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=94659\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A chemist mixed a 20% acid solution with a 60% acid solution to make 10 L of a 30% solution. How many liters of the 60% solution were used?<BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "20% solution DATA:<BR>\n" );
document.write( "Amount = x liters; active ingredient = 0.20x L<BR>\n" );
document.write( "--------------<BR>\n" );
document.write( "60% solution DATA:<BR>\n" );
document.write( "Amount = \"10-x\" liters ; active = 0.60(10-x)= 6-0.6x liters<BR>\n" );
document.write( "------------------<BR>\n" );
document.write( "Mixture DATA;<BR>\n" );
document.write( "Amt. = 10 L : active = 0.30*10 = 3 liters<BR>\n" );
document.write( "----------------------<BR>\n" );
document.write( "EQUATION:<BR>\n" );
document.write( "active + active = active<BR>\n" );
document.write( "0.2x + 6 - 0.6x = 3<BR>\n" );
document.write( "-0.4x = -3<BR>\n" );
document.write( "x = 7.5 liters (amount of 20% solution needed for the mix)<BR>\n" );
document.write( "10-x = 2.5 liters (amount of 60% solution needed for the mix)<BR>\n" );
document.write( "=======================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );