<h3>
Answer: D) 12.5%</h3>
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Work Shown:
A = old amount = 48
B = new amount = 54
C = percent change
C = [(B-A)/A]*100%
C = [(54-48)/48]*100%
C = [6/48]*100%
C = 0.125*100%
C = 12.5%
The value of C is positive to indicate a percent increase.
So we have a 12.5% increase.
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Note how 12.5% of 48 is 0.125*48 = 6
A 12.5% increase of 48 means we have an increase of 6
So, 48+6 = 54, which matches with what the instructions say. This confirms the answer.
As a shortcut, we could check it by saying 1.125*48 = 54
