4
Answer: DSet 3: Percentages (Advanced)
Explanation
PROBLEM
A value increased from 100 to 120. What was the percent increase?
A value increased from 100 to 120. What was the percent increase?
A.
40%
B.
25%
C.
15%
D.✓ Correct
20%
Detailed Explanation
Choice D is the best answer. Change = 120 - 100 = 20. Percent = 20/100 times 100 = 20%
Why others are wrong:
A: 40% is incorrect because it does not satisfy the equation.
B: 25% is incorrect because it does not satisfy the equation.
C: 15% is incorrect because it does not satisfy the equation.