PYQ Vault
EbooksTutor

Part of a mixture replaced with water once: new ratio or percentage

The same question, asked 2 times: 20 Sep 2025 S1*, 21 Sep 2025 S2. Every wording below, oldest first.

Try each one first, then open its answer.

  1. Question 1

    20 Sep 2025 S1

    66
    A bucket has 60 litres of a solution with sugar and water in the ratio 5:15:1. If 12 litres of the solution are replaced with water, what is the new ratio?

    Tap an option to check your answer.

  2. Question 2

    21 Sep 2025 S2

    65
    A mixture of 150 litres contains acid and water in the ratio 2:3. If 30 litres of the mixture is replaced with water, what will be the percentage of acid in the final mixture?

    Tap an option to check your answer.