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Combine two mixtures of different ratios: ratio in the result

This type of question, asked 2 times: 14 Sep 2025 S3, 16 Sep 2025 S1. All 2 questions below, oldest first.

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  1. Question 1

    14 Sep 2025 S3

    57
    Two containers of the same volume are 40%40\% and 50%50\% full of water, respectively. They are then filled completely with milk. If the contents of both containers are mixed in a larger vessel, what is the percentage of milk in the final mixture?

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  2. Question 2

    16 Sep 2025 S1

    63
    Two containers, A and B, contain mixtures of alcohol and water. Container A has alcohol and water in the ratio 4:1, while Container B has them in the ratio 5:2. If 10 liters are drawn from Container A and 14 liters from Container B, and the contents are mixed in a third container, what is the ratio of alcohol to water in the new mixture?

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