If the price of petrol increases by 10%, by what percentage should a person decrease their usage to keep the budget unchanged? MCQ with Answer and Explanation

If the price of petrol increases by 10%, by what percentage should a person decrease their usage to keep the budget unchanged?
A. 11.11%
B. 10%
C. 9.09%
D. 12%
Answer: Option C
Solution (By JKSSB Mock Tests)
Required decrease = (10 / 110) * 100 = 100 / 11 = 9.09%.

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Practice More Percentage Questions

Question #1
If 15 men can complete a work in 20 days, how many men are required to complete the work in 10 days?
A. 30
B. 32
C. 28
D. 25

Correct Answer: Option A


Explanation:
M1×D1 = M2×D2 → 15×20 = M2×10 → M2 = 30.

This question belongs to: Maths Percentage
Question #2
The value of a machine is 8,000. It depreciates by 20% annually. What will be its value after 2 years?
A. 6000
B. 6400
C. 5120
D. 5200

Correct Answer: Option C


Explanation:
Value = 8000 * (0.80)^2 = 8000 * 0.64 = 5120.

This question belongs to: Maths Percentage
Question #3
A man gave 35% of money to wife, 40% of remainder to son, rest to daughter. Daughter got Rs. 3900. Total money:
A. 10000
B. 12000
C. 8000
D. 9000

Correct Answer: Option A


Explanation:
Wife 35%, left 65%, son 40% of 65% = 26%, left 39% = 3900 → total = 10000.

This question belongs to: Maths Percentage