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WAEC Mathematics 2026 Question 16

Question 16

Ratio, Percentages and Rates

The result of increasing a quantity x by 400% is 60. Find the value of x

  1. A.340
  2. B.15
  3. C.240
  4. D.12
Show the answer and explanation

Answer: D (12)

Explanation

Increasing by 400% gives 500% of x: 5x = 60, so x = 12.