document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=119381>Question 119381</A>: <I><SPAN STYLE=\"word-break: break-all;\"> \r<BR>\n" );
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document.write( "How much pure alcohol must be added to 40 oz of a 25%<BR>\n" );
document.write( "solution to produce a mixture that is 40% alcohol? </SPAN>\n" );
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document.write( "solution to produce a mixture that is 40% alcohol?<BR>\n" );
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document.write( "25% solution DATA:<BR>\n" );
document.write( "Amt = 40 oz ; amt of active ingredient = 0.25*40 = 10 oz<BR>\n" );
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document.write( "Pure solution DATA:<BR>\n" );
document.write( "Amt = x oz ; amt of active ingredient = 100%*x = x oz<BR>\n" );
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document.write( "40% Mixture DATA:<BR>\n" );
document.write( "amt. = 40+x oz ; amt of active ingredient = 0.40(40+x)=16+0.4x oz<BR>\n" );
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document.write( "EQUATION:<BR>\n" );
document.write( "active + active = active<BR>\n" );
document.write( "10 + x = 16 + 0.4x<BR>\n" );
document.write( "0.6x = 6<BR>\n" );
document.write( "x = 10 oz (amt. of 100% alcohol needed for the mixture)<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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