Mrs. Kofi sold an article for C7.50 instead of C12.75. Calculate her percentage of error,...
MATHEMATICS
WAEC 1991
Mrs. Kofi sold an article for C7.50 instead of C12.75. Calculate her percentage of error, correct to one decimal place.
- A. 41.2%
- B. 18.3%
- C. 5.3%
- D. 1.7%
Correct Answer: A. 41.2%
Explanation
Error =12.75 - 7.50 = 5.25
Error % = \(\frac{5.25}{12.75}\) x 100% = 41.2%
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