WAEC SSCE - General Mathematics - 2013…

Question 1 Report

A sales boy gave a change of N68 instead of N72. Calculate his percentage error

5$\frac{5}{9}$% Correct answer

5$\frac{15}{17}$%

Answer Details

The sales boy gave a change of N68 instead of N72, which means he gave N4 less than he should have. To find the percentage error, we use the formula: Percentage Error = (Error / True Value) × 100% In this case, the True Value is N72 and the Error is N4. Substituting these values into the formula, we get: Percentage Error = (4 / 72) × 100% Percentage Error = 0.055555... × 100% Percentage Error = 5.5555...% Rounding off to the nearest whole number, we get: Percentage Error ≈ 6% Therefore, the sales boy's percentage error is approximately 6%. The closest option to this answer is 5$\frac{5}{9}$%, so the answer would be: - 5$\frac{5}{9}$%






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WAEC SSCE - General Mathematics - 2013 (Objective)