If the price of petrol increases by 50%, by what percent must a car owner reduce consumption to keep expenditure constant? MCQ with Answer and Explanation

Question

If the price of petrol increases by 50%, by what percent must a car owner reduce consumption to keep expenditure constant?

A. 25%

B. 30%

C. 33.33%

D. 35%

Answer: Option C

Solution (By JKSSB Mock Tests)

New price 1.5, multiplier needed = 1/1.5 = 2/3, reduction = 1 - 2/3 = 33.33%.

This question belongs to: Maths Percentage

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Question #1

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A number increased by 25% is 125. The number is:

A. 100

B. 105

C. 90

D. 95

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Correct Answer: Option A

Explanation:
1.25x = 125 → x = 100.

This question belongs to: Maths Percentage

Question #2

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A person spends 30% of his income on rent, 20% of the remaining on food, and saves the rest. If he saves Rs. 11200, his income is:

A. 18000

B. 20000

C. 22000

D. 25000

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Correct Answer: Option B

Explanation:
After rent 70% left, after food 0.8×70%=56% saved. 56% = 11200 → income=20000.

This question belongs to: Maths Percentage

Question #3

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In a village of 8000, 55% are below poverty line. Number not below poverty line:

A. 3200

B. 3600

C. 4400

D. 4000

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Correct Answer: Option B

Explanation:
45% of 8000 = 3600.

This question belongs to: Maths Percentage

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