document.write( "Question 818591: [ how many liters of a 40% alcohol solution must be mixed with 60 liters of a 70% solution to get a 50% solution? ]
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Algebra.Com's Answer #492653 by TimothyLamb(4379)\"\" \"About 
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40w + 70(60) = 50V
\n" ); document.write( "V = w + 60
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\n" ); document.write( "40w + 70(60) = 50V
\n" ); document.write( "40w + 4200 = 50V
\n" ); document.write( "40w + 4200 = 50(w + 60)
\n" ); document.write( "40w + 4200 = 50w + 3000
\n" ); document.write( "10w = 1200
\n" ); document.write( "w = 120
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\n" ); document.write( "answer:
\n" ); document.write( "need 120 liters of the 40% solution
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