SOLUTION: what quantity of a 20% alcohol solution must be mixed with a 5% alcohol solution to obtain 400mL of a 10% alcohol solution?
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Question 996908: what quantity of a 20% alcohol solution must be mixed with a 5% alcohol solution to obtain 400mL of a 10% alcohol solution?
Answer by josgarithmetic(39616) (Show Source): You can put this solution on YOUR website!
Here is how it works, but this is a different example of the same kind.
two-part percent mixture using just one variable
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