document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=347694>Question 347694</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I can't figure this out:  Pure acid is to be added to a 10% acid solution to obtain 54 L of a 20% acid solution. What amounts of each should be used? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #248544 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=248544\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Pure acid is to be added to a 10% acid solution to obtain 54 L of a 20% acid solution. What amounts of each should be used?<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "acid + acid = acid<BR>\n" );
document.write( "x + 0.10(54-x) = 0.20*54<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Multiply thru by 100 and solve for \"x\":<BR>\n" );
document.write( "100x + 10*54 - 10x = 20*54<BR>\n" );
document.write( "90x = 10*54<BR>\n" );
document.write( "x = 6 liters (amt. of pure acid needed in the mixture)<BR>\n" );
document.write( "=============================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "=========== </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );