waecmaths question:
A sales boy gave a change of N68 instead of N72. Calculate his percentage error.
Option A:
4%
Option B:
$5\tfrac{5}{9}$%
Option C:
$5\tfrac{15}{17}$%
Option D:
7%
waecmaths solution:
Error in the change given = N72 – N68 =N4$\text{Percentage }error=\frac{4}{72}\times 100=\frac{50}{9}=5\tfrac{5}{9}$
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