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The cost of kerosine per liter increase from N6... - JAMB Mathematics 2008 Question

The cost of kerosine per liter increase from N60 to N85. What is the percentage rate of increase?
A
42%
B
41%
C
40%
D
25%
correct option: a

N85 - N60 = N25 increase

∴percentage increase = (\frac{25}{60}\times \frac{100}{1}=\frac{125}{3}=41.67%\

=42%)

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