A certain amount of water was added to a 30% alcohol solution and a 10% solution was obtained. How much water was added?
In order to find out how much liquid was added, we will need to subtract the total from the 30% solution, that is, the 10% solution. It turns out: 30 – 10 = 20. Therefore, 20% is the amount of water added to the alcohol solution.
Answer 20% of the water was added.
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