document.write( "Question 939627: How many liters of a 20% alcohol should be added to an 80% alcohol solution to obtain 15 liters of a 60% alcohol solution? \n" ); document.write( "
Algebra.Com's Answer #572637 by stanbon(75887)\"\" \"About 
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How many liters of a 20% alcohol should be added to an 80% alcohol solution to obtain 15 liters of a 60% alcohol solution?
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\n" ); document.write( "Equation::
\n" ); document.write( "alch + alch = alch
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\n" ); document.write( "0.20x + 0.80(15-x) = 0.60*15
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\n" ); document.write( "20x + 80*15 - 80x = 60*15
\n" ); document.write( "-60x = -20*15
\n" ); document.write( "x = (1/3)15
\n" ); document.write( "x = 5 liters (amt. of 20% solution needed)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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