In an exam, 40% failed in Science, 30% in Social, 20% in both. Pass percentage is: MCQ with Answer and Explanation

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In an exam, 40% failed in Science, 30% in Social, 20% in both. Pass percentage is:

A. 45%

B. 55%

C. 50%

D. 40%

Answer: Option C

Solution (By JKExamLibrary)

Failed in at least one = 40+30-20 = 50%, pass = 50%.

This question belongs to: Maths Percentage

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Practice More Percentage Questions

Question #1

If 15% of a number is 75, the number is:

A. 600

B. 500

C. 400

D. 450

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Correct Answer: Option B

Explanation:
Let the number be x. 15% of x = 75 → 0.15x = 75 → x = 75 / 0.15 = 500.

This question belongs to: Maths Percentage

Question #2

A's salary is 30% less than B's. If B's salary is 6000, A's salary is:

A. 3900

B. 4500

C. 4200

D. 4000

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Correct Answer: Option C

Explanation:
A's salary = 6000 × 0.7 = 4200.

This question belongs to: Maths Percentage

Question #3

The price of an article is reduced by 20% and then increased by 30%. Find the net change in the price.

A. 10% increase

B. 4% increase

C. No change

D. 4% decrease

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Correct Answer: Option B

Explanation:
0.8 × 1.3 = 1.04, 4% increase.

This question belongs to: Maths Percentage

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