Price of petrol increased by 25%. To keep expenditure same, consumption must reduce by: MCQ with Answer and Explanation

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Price of petrol increased by 25%. To keep expenditure same, consumption must reduce by:

A. 20%

B. 15%

C. 25%

D. 10%

Answer: Option A

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 number is decreased by 10% and then the new number is increased by 20%. If the resulting number is 540, find the original number.

A. 450

B. 520

C. 480

D. 500

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Correct Answer: Option D

Explanation:
0.9 × 1.2 = 1.08, 1.08x = 540 → x = 500.

This question belongs to: Maths Percentage

Question #2

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In a school, 60% boys, 40% girls. 20% of boys and 30% of girls get scholarship. % of students without scholarship:

A. 70%

B. 80%

C. 72%

D. 76%

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Correct Answer: Option D

Explanation:
Scholarship boys = 12% of total, girls = 12%, total 24%, without = 76%.

This question belongs to: Maths Percentage

Question #3

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A man's salary increased from Rs. 12000 to Rs. 15000. Percentage increase is:

A. 25%

B. 22.5%

C. 20%

D. 27.5%

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Correct Answer: Option A

Explanation:
Increase = 3000, % = (3000/12000)×100 = 25%.

This question belongs to: Maths Percentage

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