waecmaths question:
The monthly salary of a man increased from N2,700 to N3,200. Find the percentage increase
Option A:
10%
Option B:
15%
Option C:
15.6%
Option D:
18.5%
waecmaths solution:
$\begin{align} & Change=N(3,200-2700)=N500 \\ & percentage\text{ }increment=\frac{500}{2700}\times 100percent=18.5percent \\\end{align}$
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