Answer:
18%
Explanation:
Use the percent increase formula:
(new value - original value) / original value
Plug in the values and solve:
(12.39 - 10.50) / 10.50
1.89 / 10.50
= 0.18
So, the percent increase in her hourly wage is 18%
12.39-10.50=1.89
1.89/10.50=0.18
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