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WAEC Further Mathematics 2024 Question 32

Question 32

Statistics

The mean of four numbers is 5 and the mean of another three numbers is 12. Find the mean of the seven numbers.

  1. A.10
  2. B.9
  3. C.8
  4. D.7
Show the answer and explanation

Answer: C (8)

Explanation

Total = 4 × 5 + 3 × 12 = 56, and 56 ÷ 7 = 8.