SOLUTION: If 2000 cm3 of 4% alcohol was combined with 400 cm3 of 10% alcohol, how much of a solution of 50% alcohol should be added to make a solution of 20% alcohol?
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Question 1080894: If 2000 cm3 of 4% alcohol was combined with 400 cm3 of 10% alcohol, how much of a solution of 50% alcohol should be added to make a solution of 20% alcohol? Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! If 2000 cm3 of 4% alcohol was combined with 400 cm3 of 10% alcohol, how much of a solution of 50% alcohol should be added to make a solution of 20% alcohol?
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Add C cc's of 50%
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2000*4 + 400*10 + C*50 = (2000+400+C)*20 = 48000 + 20C
12000 + 50C = 48000 + 20C
30C = 36000
C = 1200 cc's of 50%
