document.write( "Question 1001807: SOLUTION: How many mL of 70% alcohol should be mixed with 20 mL of 20% alcohol to prepare 50% alcohol?
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Algebra.Com's Answer #618898 by Alan3354(69443)\"\" \"About 
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How many mL of 70% alcohol should be mixed with 20 mL of 20% alcohol to prepare 50% alcohol?
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\n" ); document.write( "Add x mls
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\n" ); document.write( "20*20 + x*70 = (20+x)*50
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