Question 730238: 1 flask = 40 pints which contains 20% pure acid. If I add 10 more pints, what percentage of pure acid will be in the flask?
Answer by josgarithmetic(39617)   (Show Source):
You can put this solution on YOUR website! You might be trying to ask a different question, that you are not adding "more" acid, but are adding WATER, which is actually a bad idea, depending on the acid.
Assuming that you are trying to ask the different question, about dilution,
Try to visualize with proportional thinking:
The acid is being diluted by (4/5), so it would become 80% acid.
If you are in fact, asking the question word-for-word as written, then this would be a non-problem, in that you would just have 50 pints of 20% acid.
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