SOLUTION: How much water do I add to 1 liter of 40% alcohol vodka to make it 25% alcohol for tincture solution? Thank you

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Question 365078: How much water do I add to 1 liter of 40% alcohol vodka to make it 25% alcohol for tincture solution? Thank you
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Water is a 0% alcohol solution.
Let A be the amount of water added.
0%2AA%2B40%281%29=25%28A%2B1%29
40=25A%2B25
25A=15
A=15%2F25
A=3%2F5liter
highlight%28A=600%29ml