SOLUTION: please help. How many liters of water must be added to 10 liters of 30% alcohol in order to produce 50 liters of 10% alcohol?

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Question 890776: please help.
How many liters of water must be added to 10 liters of 30% alcohol in order to produce 50 liters of 10% alcohol?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
How many liters of water must be added to 10 liters of 30% alcohol in order to produce 50 liters of 10% alcohol?
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You have to add 40 liters to 10 liters to get 50 liters.
The concentration is not guaranteed to be 10%, tho.