SOLUTION: How many liters of a 10% acid solution must be mixed with a 50% acid solution in order to obtain 30 liters of a 30% solution?

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Question 499429: How many liters of a 10% acid solution must be mixed with a 50% acid solution in order to obtain 30 liters of a 30% solution?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Since 30 is the average of 10 & 50, it's equal amounts.
15 and 15