1
Answer: ASet 2: Percentages (Advanced)
Explanation
PROBLEM
A value increased from 70 to 77. What was the percent increase?
A value increased from 70 to 77. What was the percent increase?
A.✓ Correct
10%
B.
15%
C.
20%
D.
5%
Detailed Explanation
Choice A is the best answer. Change = 77 - 70 = 7. Percent = 7/70 times 100 = 10%
Why others are wrong:
B: 15% is incorrect because it does not satisfy the equation.
C: 20% is incorrect because it does not satisfy the equation.
D: 5% is incorrect because it does not satisfy the equation.