Population of a town is 1,32,300 now. Increased 5% annually. Population 2 years ago: MCQ with Answer and Explanation

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Population of a town is 1,32,300 now. Increased 5% annually. Population 2 years ago:

A. 1,22,000

B. 1,20,000

C. 1,15,000

D. 1,18,000

Answer: Option B

Solution (By JKSSB Mock Tests)

Pop 2 years ago = 132300 / (1.05)² = 132300 / 1.1025 = 1,20,000.

This question belongs to: Maths Percentage

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Question #1

Price up 20%, person buys 2 kg less for Rs. 60. Original price/kg:

A. Rs. 5

B. Rs. 7

C. Rs. 6

D. Rs. 4

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Correct Answer: Option A

Explanation:
Original price x, xy=60. New 1.2x(y-2)=60 → 1.2×60 - 2.4x =60 → x=5.

This question belongs to: Maths Percentage

Question #2

The population of a town increases by 10% in the first year and decreases by 10% in the second year. If the present population is 19800, what was it 2 years ago?

A. 19000

B. 21000

C. 20000

D. 18000

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Correct Answer: Option C

Explanation:
Present = original × 1.1 × 0.9 = 0.99 original. So original = 19800/0.99 = 20000.

This question belongs to: Maths Percentage

Question #3

What is 20% more than 350?

A. 400

B. 420

C. 410

D. 430

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Correct Answer: Option B

Explanation:
350 × 1.2 = 420.

This question belongs to: Maths Percentage

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