SOLUTION: how many liters of water must be added to 70 liters of an 85 alcohol solution to reduce its 50% alcohol solution

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Question 1006468: how many liters of water must be added to 70 liters of an 85 alcohol solution to reduce its 50% alcohol solution
Answer by josgarithmetic(39617) About Me  (Show Source):
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Understanding the basic lesson will mean you understand all of these types:
Two-Part Percent Mixture with One Material Quantity Unknown

The 70 liters of alcohol solution is 85% alcohol, but the water is 0% alcohol; so the quantity of the resulting solution changes, increases because of adding the water.