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%
waec 2005mathematics

The correct answer is D. 18.5%

\(\% 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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