By what percent is 120 less than 150? MCQ with Answer and Explanation

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By what percent is 120 less than 150?

A. 25%

B. 15%

C. 20%

D. 18%

Answer: Option C

Solution (By JKSSB Mock Tests)

Difference = 30, % = (30/150)×100 = 20%.

This question belongs to: Maths Percentage

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Question #1

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A trader bought articles for Rs. 1200. Ten were damaged, rest sold at Rs. 2 more than CP each, total profit Rs. 60. Number of articles:

A. 80

B. 100

C. 110

D. 90

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Correct Answer: Option B

Explanation:
Let n articles, CP each = 1200/n. Sold (n-10) at (1200/n + 2). Total SP = (n-10)(1200/n +2) = 1260. Solving gives n=100.

This question belongs to: Maths Percentage

Question #2

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Decrease 900 by 30%. Result is:

A. 630

B. 620

C. 610

D. 600

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Correct Answer: Option A

Explanation:
900 × 0.7 = 630.

This question belongs to: Maths Percentage

Question #3

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A sum of money at compound interest becomes 3 times in 6 years. How many years will it take to become 27 times?

A. 15 years

B. 24 years

C. 12 years

D. 18 years

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Correct Answer: Option D

Explanation:
3^3=27. Since 3 times in 6 years, 27 times = 3 intervals = 18 years.

This question belongs to: Maths Percentage

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