SOLUTION: How much 20% alcohol is required to make 1L of 10% alcohol?
Algebra.Com
Question 957523: How much 20% alcohol is required to make 1L of 10% alcohol?
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
Your intuition should tell you that 10% is half of 20%, so you would take 1 L of 20%, add 1 L of water, and you have 10% alcohol.
A more formal description is here:
Mixture: one material quantity unknown
http://www.algebra.com/my/Two-Part-Mixture-with-one-material-quantity-unknown.lesson?content_action=show_dev
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