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WBCS Main Examination 2023 — Paper VI: Arithmetic and Test of Reasoning · Question 151 of 200

Q151
ArithmeticAverages & Ages
Present ages of A and B are 50 years and 18 years respectively. In how many years will A be twice as old as B?
  1. a.14 years
  2. b.15 years
  3. c.16 years
  4. d.18 years

Answer: (A) 14 years

After t years, 50 + t = 2(18 + t), so 50 + t = 36 + 2t and t = 14. Check: A will be 64 and B 32. 16 years would make them 66 and 34.

Q150 Whole paperQ152
Present ages of A and B are 50 years and 18 years respectively. In … — WBCS Main Examination 2023 Q151 | Prostuti360°