The population of a village is 5,000. It increases by 20% annually. What will be the population after 2 years? MCQ with Answer and Explanation

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The population of a village is 5,000. It increases by 20% annually. What will be the population after 2 years?

A. 7000

B. 7400

C. 6000

D. 7200

Answer: Option D

Solution (By JKSSB Mock Tests)

Population = 5000 * (1.20)^2 = 5000 * 1.44 = 7200.

This question belongs to: Maths Percentage

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Question #1

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A shopkeeper sells an article at 10% profit. Had he bought it at 20% less and sold it for Rs. 12 less, he would have gained 30%. Find the cost price.

A. Rs. 150

B. Rs. 200

C. Rs. 180

D. Rs. 220

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Correct Answer: Option B

Explanation:
CP=x, SP=1.1x. New CP=0.8x, new SP=1.1x-12 = 1.3×0.8x = 1.04x → 0.06x=12 → x=200.

This question belongs to: Maths Percentage

Question #2

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Decrease 900 by 30%. Result is:

A. 600

B. 610

C. 630

D. 620

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Correct Answer: Option C

Explanation:
900 × 0.7 = 630.

This question belongs to: Maths Percentage

Question #3

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The population of a town increases by 15% in the first year and decreases by 10% in the second year. If the population at the end of second year is 10350, what was the population at the beginning?

A. 10500

B. 9500

C. 10000

D. 9000

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Correct Answer: Option C

Explanation:
Net multiplier = 1.15 × 0.9 = 1.035. Population = 10350/1.035 = 10000.

This question belongs to: Maths Percentage

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