document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=580876>Question 580876</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A chemist has one 30-L bottle of 15% hydrochloric acid and one 30-L bottle of 90% hydrochloric acid. She mixes 20 L of 60% hydrochloric acid and then pours 5L of that solution back into the bottle containing the 90% hydrochloric acid. How strong is the acid in that bottle now? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #371379 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=371379\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A chemist has one 30-L bottle of 15% hydrochloric acid and one 30-L bottle of 90% hydrochloric acid. She mixes 20 L of 60% hydrochloric acid and then pours 5L of that solution back into the bottle containing the 90% hydrochloric acid. How strong is the acid in that bottle now?<BR>\n" );
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document.write( "acid + acid = acid<BR>\n" );
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document.write( "0.60*5 + 0.90*30 = x(5+30)<BR>\n" );
document.write( "----<BR>\n" );
document.write( "3 + 27 = 35x<BR>\n" );
document.write( "x = 30/35<BR>\n" );
document.write( "x = 0.8571 = 85.71%<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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