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The monthly salary of a man increased from N2,700 to N3,200. Find the percentage increase

Mathematics
WAEC 2005

The monthly salary of a man increased from N2,700 to N3,200. Find the percentage increase

  • A. 10%
  • B. 15%
  • C. 15.6%
  • D. 18.5%
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Correct Answer: Option D
Explanation

\(\% increase = \frac{Increase}{initial\hspace{1mm} salary}\times 100\%\)
Increase = N3,200 - N2,700 = N500
Initial \(\hspace{1mm} salary = N2,700.00 = \frac{N500}{N2,700}\times 100\% = 18.5\%\)


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