Population 12000, first year +5%, second year -5%. Population after 2 years: MCQ with Answer and Explanation

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

A. 11970

B. 11940

C. 12030

D. 12000

Answer: Option A

Solution (By JKSSB Mock Tests)

12000×1.05×0.95 = 11970.

This question belongs to: Maths Percentage

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Question #1

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A man gave 20% to his wife, 25% of remainder to his son, 30% of remainder to his daughter, and the rest Rs. 16800 to charity. Total amount:

A. 36000

B. 40000

C. 37500

D. 35000

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Correct Answer: Option B

Explanation:
Wife 20%, left 80%. Son 20% of total (25% of 80), left 60%. Daughter 18% of total (30% of 60), left 42% = 16800 → total=40000.

This question belongs to: Maths Percentage

Question #2

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18 is what percentage of 120?

A. 18%

B. 20%

C. 12%

D. 15%

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Correct Answer: Option D

Explanation:
(18 / 120) * 100% = (3 / 20) * 100% = 15%.

This question belongs to: Maths Percentage

Question #3

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20% of 500 is:

A. 90

B. 110

C. 80

D. 100

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Correct Answer: Option D

Explanation:
0.2 × 500 = 100.

This question belongs to: Maths Percentage

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