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WAEC Mathematics 2002 Question 42

Question 42

Ratio, Percentages and Rates

Calculate, correct to two significant figures, the percentage error in approximating 0.375 to 0.4.

  1. A.2.0
  2. B.2.5
  3. C.6.6
  4. D.6.7.
Show the answer and explanation

Answer: D (6.7.)

Explanation

Error = 0.025. 0.025/0.375 × 100% = 6.67% ≈ 6.7%.