CAT 2018 Slot 2 QA Q19 Ratio, Mixtures & Averages

Question 19 of the Quantitative Ability (QA) section, CAT 2018 Slot 2, with CAT's official answer.

A jar contains a mixture of 175 ml water and 700 ml alcohol. Gopal takes out 10% of the mixture and substitutes it by water of the same amount. The process is repeated once again. The percentage of water in the mixture is now
  1. A
    25.4
  2. B
    20.5
  3. C
    30.3
  4. D
    35.2

Answer: (D) 35.2 Ratio, Mixtures & Averages MCQ

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Same concept in other years

See every question on Repeated replacement of a mixture: concentration × (1 − f) each time.

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