She will earn $920 after working 40 hours.
Step-by-step explanation:
Given,
Amount per hour = $20
Raise = 15%
Raise amount = 15% of Amount per hour

New amount per hour = Amount per hour + raise amount
New amount per hour = 20+3= $23
Total earning after working 40 hours = Amount per hour * 40

She will earn $920 after working 40 hours.
Keywords: Raise, percentage
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