Student A gets 25% marks and fails by 20 marks. Student B gets 40% marks and passes by 40 marks. Find the total marks. MCQ with Answer and Explanation

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Student A gets 25% marks and fails by 20 marks. Student B gets 40% marks and passes by 40 marks. Find the total marks.

A. 400

B. 600

C. 300

D. 500

Answer: Option A

Solution (By JKSSB Mock Tests)

Difference in percentage = 40% - 25% = 15%. Difference in marks = 40 + 20 = 60. 15% of Total = 60. Total = 400.

This question belongs to: Maths Percentage

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Question #1

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The population of a town increases by 10% annually. If the current population is 12,100, what was the population two years ago?

A. 12,000

B. 9,000

C. 10,000

D. 11,000

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Correct Answer: Option C

Explanation:
Let the population two years ago be P. P * (110 / 100) * (110 / 100) = 12100. P * 1.21 = 12100 implies P = 10000.

This question belongs to: Maths Percentage

Question #2

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130% of 130 is:

A. 159

B. 149

C. 179

D. 169

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Correct Answer: Option D

Explanation:
1.3 × 130 = 169.

This question belongs to: Maths Percentage

Question #3

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A number is increased by 15% and then decreased by 20%. The result is 276. Find the original number.

A. 320

B. 280

C. 250

D. 300

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Correct Answer: Option D

Explanation:
1.15 × 0.8 = 0.92, 0.92x = 276 → x = 300.

This question belongs to: Maths Percentage

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