A number increased by 25% then by 20% becomes 180. Original number: MCQ with Answer and Explanation

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A number increased by 25% then by 20% becomes 180. Original number:

A. 120

B. 130

C. 100

D. 110

Answer: Option A

Solution (By JKSSB Mock Tests)

x × 1.25 × 1.2 = 1.5x = 180 → x = 120.

This question belongs to: Maths Percentage

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Practice More Percentage Questions

Question #1

Radius of circle decreased 20%. Area decreases by:

A. 36%

B. 32%

C. 38%

D. 34%

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Correct Answer: Option A

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

This question belongs to: Maths Percentage

Question #2

35% failed in Maths, 25% in English, 15% in both. % passed in both:

A. 60%

B. 50%

C. 45%

D. 55%

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Correct Answer: Option D

Explanation:
Failed at least one = 35+25-15=45%, passed both = 55%.

This question belongs to: Maths Percentage

Question #3

The price of an item increases by 25% and then decreases by 20%. What is the net percentage change?

A. 5% increase

B. 10% increase

C. 5% decrease

D. 0%

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Correct Answer: Option D

Explanation:
Net change = 25 - 20 + ((25 * -20) / 100) = 5 - 5 = 0%.

This question belongs to: Maths Percentage

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