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WBCS Main Examination 2023 — Paper VI: Arithmetic and Test of Reasoning · Question 137 of 200

Q137
ArithmeticAverages & Ages
Sum of present ages of A, B and C is 72 years. If 4 years ago, their ages were in the ratio 1 : 2 : 3, find A's present age.
  1. a.7 years
  2. b.10 years
  3. c.12 years
  4. d.14 years

Answer: (D) 14 years

Four years ago the sum was 72 − 12 = 60, shared 1 : 2 : 3 as 10, 20 and 30. A's present age is 10 + 4 = 14 years. 12 years wrongly divides the present total of 72 in the ratio.

Q136 Whole paperQ138