A student scored 42% marks and failed by 12 marks. Another student scored 58% marks and got 20 marks more than the passing marks. Find the maximum marks. MCQ with Answer and Explanation

Question

A student scored 42% marks and failed by 12 marks. Another student scored 58% marks and got 20 marks more than the passing marks. Find the maximum marks.

A. 180

B. 200

C. 220

D. 160

Answer: Option B

Solution (By JKSSB Mock Tests)

0.42M + 12 = 0.58M - 20 → 32 = 0.16M → M = 200.

This question belongs to: Maths Percentage

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Question #1

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Population of a town is 1,32,300 now. Increased 5% annually. Population 2 years ago:

A. 1,15,000

B. 1,20,000

C. 1,18,000

D. 1,22,000

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Correct Answer: Option B

Explanation:
Pop 2 years ago = 132300 / (1.05)² = 132300 / 1.1025 = 1,20,000.

This question belongs to: Maths Percentage

Question #2

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A number is increased by 10%, then increased by 20%, then decreased by 10%. Net percentage change:

A. 16% increase

B. 18.8% increase

C. 12.8% increase

D. 20% increase

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Correct Answer: Option B

Explanation:
1.1 × 1.2 × 0.9 = 1.188, increase 18.8%.

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Question #3

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The ratio of boys to girls in a class is 3:2. If 10% of boys and 15% of girls are absent, what fraction of the total students are present?

A. 22/25

B. 33/50

C. 87/100

D. 17/25

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Correct Answer: Option A

Explanation:
Total = 5k. Present boys=0.9×3k=2.7k, girls=0.85×2k=1.7k, present=4.4k. Fraction = 4.4/5 = 44/50 = 22/25.

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