document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=994592>Question 994592</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A laboratory technician needs to make a 42-liter batch of a 40% acid solution. How can the laboratory technician combine a batch of an acid solution that is pure acid with another that is 10% to get the desired concentration?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #613624 by </B><A HREF=/tutors/aboutme.mpl?userid=macston><B>macston(5194)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=macston><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=macston><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=613624\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "P=amount of pure acid; T=amount of 10% solution<BR>\n" );
document.write( "P+T=42L<BR>\n" );
document.write( "T=42L-P<BR>\n" );
document.write( ".<BR>\n" );
document.write( "(1.00)P+(0.10)T=(0.40)42L<BR>\n" );
document.write( "P+(0.10)(42L-P)=16.8L<BR>\n" );
document.write( "P+4.2L-0.10P=16.8L<BR>\n" );
document.write( "0.90P=12.6L<BR>\n" );
document.write( "P=14<BR>\n" );
document.write( "ANSWER 1: He should use 14 liters of pure acid.<BR>\n" );
document.write( "T=42L-P=42L-14L=28L<BR>\n" );
document.write( "ANSWER 2: He should use 28 liters of 10% acid solution.<BR>\n" );
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document.write( "CHECK:<BR>\n" );
document.write( "(1.00)P+(0.10)T=(0.40)42L<BR>\n" );
document.write( "14L+(0.10)28L=16.8L<BR>\n" );
document.write( "14L+2.8L=16.8L<BR>\n" );
document.write( "16.8L=16.8L\r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );