document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=405382>Question 405382</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How many liters of a 40% acid solution must be added to 12 liters of a 20% solution to obtain a 25% solution? Can you please show me how to work out this problem also:) Thanks. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #286325 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=286325\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a ALIGN=MIDDLE  ALT=\"a\"   DISABLED_style= \"max-width:90%; height:auto;\" > = liters of 40% solution needed<BR>\n" );
document.write( "given:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.2%2A12+=+2.4 ALIGN=MIDDLE  ALT=\".2%2A12+=+2.4\"   DISABLED_style= \"max-width:90%; height:auto;\" > liters of acid in 20% solution<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.4a ALIGN=MIDDLE  ALT=\".4a\"   DISABLED_style= \"max-width:90%; height:auto;\" > = liters of acid in 40% solution<BR>\n" );
document.write( "------------------------------------------------<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28.4a+%2B+2.4%29%2F%28a+%2B+12%29+=+.25 ALIGN=MIDDLE  ALT=\"%28.4a+%2B+2.4%29%2F%28a+%2B+12%29+=+.25\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.4a+%2B+2.4+=+.25%2A%28a+%2B+12%29 ALIGN=MIDDLE  ALT=\".4a+%2B+2.4+=+.25%2A%28a+%2B+12%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.4a+%2B+2.4+=+.25a+%2B+3 ALIGN=MIDDLE  ALT=\".4a+%2B+2.4+=+.25a+%2B+3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.15a+=+.6 ALIGN=MIDDLE  ALT=\".15a+=+.6\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=15a+=+60 ALIGN=MIDDLE  ALT=\"15a+=+60\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a+=+4 ALIGN=MIDDLE  ALT=\"a+=+4\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "4 liters of 40% solution are needed<BR>\n" );
document.write( "check answer:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28.4%2A4+%2B+2.4%29%2F%284+%2B+12%29+=+.25 ALIGN=MIDDLE  ALT=\"%28.4%2A4+%2B+2.4%29%2F%284+%2B+12%29+=+.25\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4%2F16+=+.25 ALIGN=MIDDLE  ALT=\"4%2F16+=+.25\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.25+=+.25 ALIGN=MIDDLE  ALT=\".25+=+.25\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );