Given:
Old pay per hour = $15.50
New pay per hour = $18.29
Required: Percent change
Explanation:
Change in payment = 18.29 - 15.50 = 2.79
Percent change
[tex]\begin{gathered} =\frac{\text{ Change in payment}}{\text{Old pay per hour}}\cdot100 \\ =\frac{2.79}{15.50}\cdot100 \\ =18\% \end{gathered}[/tex]Final Answer: Percent change = 18%