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WAEC Mathematics 2005 Question 50

Question 50

Commercial Arithmetic

The monthly salary of a man increased from N2,700 to N3,200. Find the percentage increase.

  1. A.10%
  2. B.15%
  3. C.15.6%
  4. D.18.5%
Show the answer and explanation

Answer: D (18.5%)

Explanation

Increase = N500; 500/2700 × 100% ≈ 18.5%.