document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=396802>Question 396802</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How many milliliters of pure acid must be added to 150 milliliters of a 15% solution of acid to obtain a 25% solution?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #281388 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=281388\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> How many milliliters of pure acid must be added to 150 milliliters of a 15% solution of acid to obtain a 25% solution?<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "acid + acid = acid<BR>\n" );
document.write( "1*x + 0.15*150 = 0.25(x+150)<BR>\n" );
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document.write( "Multiply thru by 100 to get:<BR>\n" );
document.write( "100x + 15*150 = 25x + 25*150<BR>\n" );
document.write( "75x = 10*150<BR>\n" );
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document.write( "x = 20 mL (amount pure acid needed for the mixture)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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