document.write( "Question 921465: How much water should be mixed to a 500 ml of 30% solution of alcohol to have a resulting concentration of 20%?
\n" ); document.write( "A.200 ml
\n" ); document.write( "B.250 ml
\n" ); document.write( "C.500 ml
\n" ); document.write( "D.1000 ml
\n" ); document.write( "E.2000 ml
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Algebra.Com's Answer #558999 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
500*30 + W*0 = (500 + W)*20
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