Answer:
75 percent
Explanation:
21-12=9
9=x%*12
/ /
12 12
3/4 = x
0.75 =x
75% = x
Answer: 75% increase
Percentage Increase=(Final Value−Starting Value/Starting Value)×100
Percentage Increase=(21-12/12) ×100
Percentage Increase=(9/12) ×100
Percentage Increase=0.75 ×100
Percentage Increase=75%
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