Kerosene price up 25%. To keep expenditure same, reduce consumption by: MCQ with Answer and Explanation

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Kerosene price up 25%. To keep expenditure same, reduce consumption by:

A. 15%

B. 20%

C. 25%

D. 18%

Answer: Option B

Solution (By JKSSB Mock Tests)

Reduction = (25/125)×100 = 20%.

This question belongs to: Maths Percentage

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Question #1

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A's marks 20% more than B's, B's 25% less than C's. A gets 180, C's marks:

A. 160

B. 200

C. 220

D. 180

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Correct Answer: Option B

Explanation:
A=1.2B, B=0.75C → A=0.9C → C=180/0.9=200.

This question belongs to: Maths Percentage

Question #2

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Population 12000, first year +5%, second year -5%. Population after 2 years:

A. 11940

B. 12030

C. 11970

D. 12000

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Correct Answer: Option C

Explanation:
12000×1.05×0.95 = 11970.

This question belongs to: Maths Percentage

Question #3

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Rice price reduced by 10%, a man buys 4 kg more for Rs. 144. Reduced price per kg is:

A. Rs. 3.6

B. Rs. 3.8

C. Rs. 3.4

D. Rs. 3.2

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Correct Answer: Option A

Explanation:
Original x, xy=144. 0.9x(y+4)=144 → 129.6+3.6x=144 → x=4, reduced = 3.6.

This question belongs to: Maths Percentage

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