document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=637225>Question 637225</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Doreen Schmidt is a chemist with Gemco Pharmeceutical. She need o prepare 12 liters of a 9% hydrochloric solution. Find the amount of a 4% solution and the amount of a 12% solution she should mix to get this solution. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #401506 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=401506\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> She need o prepare 12 liters of a 9% hydrochloric solution. Find the amount of a 4% solution and the amount of a 12% solution she should mix to get this solution.<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "acid + acid = acid<BR>\n" );
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document.write( "0.04x + 0.12(12-x) = 0.09*12<BR>\n" );
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document.write( "Multiply thru by 100 to get:<BR>\n" );
document.write( "4x + 12*12 - 12x = 9*12<BR>\n" );
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document.write( "-8x = -3*12<BR>\n" );
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document.write( "x = 3(3/2) = 4.5 liters (amt. of 4% solution needed)<BR>\n" );
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document.write( "12-x = 7.5 liters (amt. of 12% solution needed)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "================ </SPAN>\n" );
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