document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=619276>Question 619276</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A chemist has 400 milliliters of a solution that is half acid.  She needs a solution that is 60% acid.  How many millilters of acid should she add? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #389512 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=389512\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A chemist has 400 milliliters of a solution that is half acid. She needs a solution that is 60% acid. How many millilters of acid should she add?<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "acid + acid = acid<BR>\n" );
document.write( "0.50*400 + x = 0.60(400+x)<BR>\n" );
document.write( "-------------------------------------<BR>\n" );
document.write( "Multiply thru by 100 to get:<BR>\n" );
document.write( "50*400 + 100x = 60*400 + 60x<BR>\n" );
document.write( "40x = 10*400<BR>\n" );
document.write( "x = 100 mL (amt. of acid to be added)<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" );