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WBCS Main Examination 2023 — Paper VI: Arithmetic and Test of Reasoning · Question 84 of 200

Q84
ArithmeticAverages & Ages
The average marks obtained by a group of 10 students is 41 marks. Find the new average if a new student who scored 63 marks is also included in the group.
  1. a.39
  2. b.40
  3. c.43
  4. d.45

Answer: (C) 43

The group's total is 10 × 41 = 410; adding 63 makes 473 for 11 students. The new average is 473 ÷ 11 = 43. An average must rise when a higher score is added, so 39 and 40 are impossible.

Q83 Whole paperQ85
The average marks obtained by a group of 10 students is 41 marks. F… — WBCS Main Examination 2023 Q84 | Prostuti360°