A's marks are 20% more than B's and B's marks are 20% less than C's. If A got 120 marks, C's marks are: MCQ with Answer and Explanation

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A's marks are 20% more than B's and B's marks are 20% less than C's. If A got 120 marks, C's marks are:

A. 125

B. 100

C. 120

D. 110

Answer: Option A

Solution (By JKSSB Mock Tests)

A=1.2B → B=120/1.2=100. B=0.8C → C=100/0.8=125.

This question belongs to: Maths Percentage

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Question #1

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

A. 1,35,000

B. 1,30,000

C. 1,28,000

D. 1,32,000

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Correct Answer: Option D

Explanation:
1,20,000 × 1.1 = 1,32,000.

This question belongs to: Maths Percentage

Question #2

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Price of TV increased 30% then decreased 30%. Net change:

A. 9% increase

B. No change

C. 9% decrease

D. 6% decrease

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Correct Answer: Option C

Explanation:
1.3 × 0.7 = 0.91, 9% decrease.

This question belongs to: Maths Percentage

Question #3

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Production increased from 6000 to 7200. Percentage increase:

A. 20%

B. 18%

C. 15%

D. 22%

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Correct Answer: Option A

Explanation:
(1200/6000)×100 = 20%.

This question belongs to: Maths Percentage

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