Question
How much pure water must be added to 36 liters of an $18 \%$ acid solution to dilute it to a $12 \%$ acid solution?
Step 1
The amount of acid before adding water is equal to the amount of acid after adding water. This gives us the equation: $$0.18 \times 36 = 0.12 \times (36 + x)$$ Show more…
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