document.write( "Question 644183: How many liters of a 20% alcohol solution must be mixed with 30 liters of a 90% solution to get a 80% solution? \n" ); document.write( "
Algebra.Com's Answer #404886 by Alan3354(69443)\"\" \"About 
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How many liters of a 20% alcohol solution must be mixed with 30 liters of a 90% solution to get a 80% solution?
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\n" ); document.write( "30*90 + x*20 = (x+30)*80
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