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Milk:water=4:1 in a mixture. 20% of the mixture is removed. (From passage data.) Find the total mixture quantity.

1. 120 liters
2. 135 liters
3. 150 liters
4. 180 liters

Correct answer: 150 liters

Solution

With the given conditions about 20% removal from milk:water=4:1 mixture, and using the passage data, the original mixture quantity is 150 liters.

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