document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=522537>Question 522537</A>: <I><SPAN STYLE=\"word-break: break-all;\">  Please help me with this question...(How much pure acid shoud be mixed with 2 gallons of an 80% acid solution in order to get a 90% acid solution?)  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #346905 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=346905\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> How much pure acid shoud be mixed with 2 gallons of an 80% acid solution in order to get a 90% acid solution?) <BR>\n" );
document.write( "------<BR>\n" );
document.write( "Equation:<BR>\n" );
document.write( "acid + acid = acid<BR>\n" );
document.write( "0.8*2 + 1.0x = 0.9(2+x)<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Multiply thru by 10 to get:<BR>\n" );
document.write( "8*2 + 10x = 9*2 + 9x<BR>\n" );
document.write( "x = 2 gallons (amt. of pure acid needed)<BR>\n" );
document.write( "=====<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );