Question 36

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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: 

$\begin{align}  & \text{Change in salary}=47-40=7 \\ & \text{percentage change}=\frac{7}{40}\times 100percent=17.5percent \\\end{align}$

maths year: