Population of a city is 1,20,000, increasing at 10% per year. After 1 year, population is: MCQ with Answer and Explanation

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Population of a city is 1,20,000, increasing at 10% per year. After 1 year, population is:

A. 1,28,000

B. 1,35,000

C. 1,32,000

D. 1,30,000

Answer: Option C

Solution (By JKSSB Mock Tests)

1,20,000 × 1.1 = 1,32,000.

This question belongs to: Maths Percentage

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Question #1

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The price of a commodity is increased by x% then decreased by x%. Net decrease is 9%. Find x.

A. 25

B. 35

C. 20

D. 30

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Correct Answer: Option D

Explanation:
1 - x²/10000 = 0.91 → x² = 900 → x = 30.

This question belongs to: Maths Percentage

Question #2

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30% of 150 + 20% of 50 = ?

A. 60

B. 70

C. 55

D. 65

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Correct Answer: Option C

Explanation:
30% of 150 = 45, 20% of 50 = 10, sum = 55.

This question belongs to: Maths Percentage

Question #3

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A's marks 30% more than B, B's 20% less than C. A=156, C's marks:

A. 150

B. 140

C. 160

D. 130

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Correct Answer: Option A

Explanation:
A=1.3B, B=0.8C → A=1.04C → C=156/1.04=150.

This question belongs to: Maths Percentage

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