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. 55%

B. 40%

C. 45%

D. 50%

Answer: Option D

Solution (By JKSSB Mock Tests)

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

Price of an article reduced by 20%, new price Rs. 160. Original price was:

A. 190

B. 210

C. 180

D. 200

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Correct Answer: Option D

Explanation:
Original × 0.8 = 160 → original = 200.

This question belongs to: Maths Percentage

Question #2

If 15 men can complete a work in 20 days, how many men are required to complete the work in 10 days?

A. 30

B. 28

C. 32

D. 25

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Correct Answer: Option A

Explanation:
M1×D1 = M2×D2 → 15×20 = M2×10 → M2 = 30.

This question belongs to: Maths Percentage

Question #3

If the price of petrol increases by 50%, by what percent must a car owner reduce consumption to keep expenditure constant?

A. 35%

B. 30%

C. 25%

D. 33.33%

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Correct Answer: Option D

Explanation:
New price 1.5, multiplier needed = 1/1.5 = 2/3, reduction = 1 - 2/3 = 33.33%.

This question belongs to: Maths Percentage

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