80% passed English, 70% Maths, 60% both. % failed both: MCQ with Answer and Explanation

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80% passed English, 70% Maths, 60% both. % failed both:

A. 5%

B. 10%

C. 15%

D. 20%

Answer: Option B

Solution (By JKSSB Mock Tests)

Pass at least one = 80+70-60=90%, fail both = 10%.

This question belongs to: Maths Percentage

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Practice More Percentage Questions

Question #1

Price decreased by 15% then increased by 15%. Net change is:

A. 1.5% decrease

B. 2.25% increase

C. No change

D. 2.25% decrease

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Correct Answer: Option D

Explanation:
0.85 × 1.15 = 0.9775, 2.25% decrease.

This question belongs to: Maths Percentage

Question #2

Two successive discounts of 20% and 10% on Rs. 2000 give final price:

A. 1440

B. 1400

C. 1500

D. 1360

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Correct Answer: Option A

Explanation:
2000 × 0.8 × 0.9 = 1440.

This question belongs to: Maths Percentage

Question #3

Price increased 12% then decreased 12%. Net change:

A. 2.4% decrease

B. 1.44% increase

C. 1.44% decrease

D. No change

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Correct Answer: Option C

Explanation:
1.12×0.88 = 0.9856, 1.44% decrease.

This question belongs to: Maths Percentage

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