CAT 2020 Slot 3 QA Q18 Ratio, Mixtures & Averages

Question 18 of the Quantitative Ability (QA) section, CAT 2020 Slot 3, with CAT's official answer.

Two alcohol solutions, A and B, are mixed in the proportion 1:3 by volume. The volume of the mixture is then doubled by adding solution A such that the resulting mixture has 72% alcohol. If solution A has 60% alcohol, then the percentage of alcohol in solution B is
  1. A
    94%
  2. B
    92%
  3. C
    90%
  4. D
    89%

Answer: (B) 92% Ratio, Mixtures & Averages MCQ

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