If x is 80% of y, what percentage of x is y? MCQ with Answer and Explanation

If x is 80% of y, what percentage of x is y?
A. 125%
B. 80%
C. 120%
D. 100%
Answer: Option A
Solution (By JKExamLibrary)
x = 0.8y. Therefore, y = x / 0.8 = 1.25x. Thus, y is 125% of x.

This question belongs to: Maths Percentage

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Practice More Percentage Questions

Question #1 Report Error
What is 12.5% of 800?
A. 100
B. 150
C. 120
D. 80

Correct Answer: Option A


Explanation:
12.5% is equivalent to the fraction 1/8. (1/8) * 800 = 100.

This question belongs to: Maths Percentage
Question #2 Report Error
A number increased by 25% then by 20% becomes 180. Original number:
A. 100
B. 120
C. 130
D. 110

Correct Answer: Option B


Explanation:
x × 1.25 × 1.2 = 1.5x = 180 → x = 120.

This question belongs to: Maths Percentage
Question #3 Report Error
Employees reduced in ratio 5:4, wages increased in ratio 6:7. Wage bill ratio initial:final:
A. 15:14
B. 10:9
C. 9:10
D. 14:15

Correct Answer: Option A


Explanation:
Initial bill = E×W. Final = (4/5)E×(7/6)W = (28/30) = 14/15 initial. Ratio initial:final = 1:(14/15) = 15:14.

This question belongs to: Maths Percentage