In an examination, 70% passed in English, 65% in Maths and 15% failed in both subjects. If 300 students passed in both, total number of students was: MCQ with Answer and Explanation

Question

In an examination, 70% passed in English, 65% in Maths and 15% failed in both subjects. If 300 students passed in both, total number of students was:

A. 550

B. 650

C. 600

D. 500

Answer: Option C

Solution (By JKSSB Mock Tests)

Failed Eng=30%, Maths=35%. Passed both = 100 - (30+35-15) = 50%. 50% of total = 300 → total = 600.

This question belongs to: Maths Percentage

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Question #1

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120 increased by 18% is:

A. 136.6

B. 138.4

C. 140.2

D. 141.6

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Correct Answer: Option D

Explanation:
120 × 1.18 = 141.6.

This question belongs to: Maths Percentage

Question #2

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A's income is 30% more than B's, B's is 20% more than C's. A's income is what percent more than C's?

A. 50%

B. 60%

C. 56%

D. 52%

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Correct Answer: Option C

Explanation:
C=100, B=120, A=120×1.3=156, so A is 56% more than C.

This question belongs to: Maths Percentage

Question #3

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If speed decreases by 20%, by what percentage will the time required to cover the same distance increase?

A. 30%

B. 20%

C. 25%

D. 33.33%

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Correct Answer: Option C

Explanation:
Time increase = (20 / 80) * 100 = 25%.

This question belongs to: Maths Percentage

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