A student scored 30% marks and failed by 45 marks. Another scored 42% marks and got 45 more than pass. Pass marks: MCQ with Answer and Explanation

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A student scored 30% marks and failed by 45 marks. Another scored 42% marks and got 45 more than pass. Pass marks:

A. 250

B. 270

C. 225

D. 300

Answer: Option B

Solution (By JKSSB Mock Tests)

0.3M + 45 = 0.42M - 45 → 0.12M = 90 → M=750. Pass = 0.3×750+45 = 270.

This question belongs to: Maths Percentage

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Question #1

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Fresh fruit has 72% water, dry fruit 25% water. Dry fruit from 120 kg fresh fruit:

A. 50 kg

B. 48 kg

C. 42 kg

D. 44.8 kg

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Correct Answer: Option D

Explanation:
Dry matter in fresh = 28% of 120 = 33.6 kg, in dry fruit 75% is dry matter, weight = 33.6/0.75 = 44.8 kg.

This question belongs to: Maths Percentage

Question #2

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130% of 130 is:

A. 149

B. 159

C. 169

D. 179

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Correct Answer: Option C

Explanation:
1.3 × 130 = 169.

This question belongs to: Maths Percentage

Question #3

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The value of a machine depreciates at 10% per annum. If its present value is Rs. 64,800, what was its value 2 years ago?

A. Rs. 85,000

B. Rs. 80,000

C. Rs. 90,000

D. Rs. 75,000

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Correct Answer: Option B

Explanation:
Value 2 yrs ago = 64800 / (0.9×0.9) = 64800/0.81 = 80,000.

This question belongs to: Maths Percentage

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