Question on: WAEC Mathematics - 2005
The salary of a man was increased in the ratio 40:47. calculate the percentage increase in the salary
A
85.1%
B
58.5%
C
17.5%
D
14.9%
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Correct Option: C
\(\%Increase = \frac{Actual \hspace{1mm}increase}{initial \hspace{1mm}ratio}\times 100\%\)
Actual increase = 7; Initial ratio = 40
\(=\left(\frac{7}{40} \times 100\%\right)=\frac{35}{2}=17.5\%\)
Actual increase = 7; Initial ratio = 40
\(=\left(\frac{7}{40} \times 100\%\right)=\frac{35}{2}=17.5\%\)
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