A man's salary increased from Rs. 12000 to Rs. 15000. Percentage increase is: MCQ with Answer and Explanation

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

A. 22.5%

B. 27.5%

C. 20%

D. 25%

Answer: Option D

Solution (By JKSSB Mock Tests)

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

This question belongs to: Maths Percentage

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Question #1

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The population of a town increases by 10% annually. If the current population is 12,100, what was the population two years ago?

A. 11,000

B. 9,000

C. 10,000

D. 12,000

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Correct Answer: Option C

Explanation:
Let the population two years ago be P. P * (110 / 100) * (110 / 100) = 12100. P * 1.21 = 12100 implies P = 10000.

This question belongs to: Maths Percentage

Question #2

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Radius of circle decreased 20%. Area decreases by:

A. 32%

B. 34%

C. 36%

D. 38%

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Correct Answer: Option C

Explanation:
Area multiplier = 0.8² = 0.64, decrease 36%.

This question belongs to: Maths Percentage

Question #3

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In a city, 55% read newspaper A, 45% read B, 20% read both. % reading exactly one newspaper:

A. 65%

B. 60%

C. 50%

D. 55%

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Correct Answer: Option B

Explanation:
Only A = 55-20=35%, only B=45-20=25%, exactly one = 60%.

This question belongs to: Maths Percentage

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