waecmaths question:
The salary of a man was increased in the ratio 40: 47. Calculate the percentage increase in the salary
Option A:
85.1%
Option B:
58.5%
Option C:
17.5%
Option D:
14.9%
waecmaths solution:
$\begin{align} & \text{Change in salary}=47-40=7 \\ & \text{percentage change}=\frac{7}{40}\times 100percent=17.5percent \\\end{align}$
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