72% passed an exam. Failures = 560. Total examinees: MCQ with Answer and Explanation

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72% passed an exam. Failures = 560. Total examinees:

A. 2500

B. 2000

C. 2200

D. 1800

Answer: Option B

Solution (By JKSSB Mock Tests)

28% = 560, total = 560/0.28 = 2000.

This question belongs to: Maths Percentage

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Question #1

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A man's salary was reduced by 20%. By what percent must it be raised to bring it back to the original?

A. 20%

B. 25%

C. 30%

D. 22.5%

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Correct Answer: Option B

Explanation:
After reduction 80, to reach 100, increase = (20/80)×100 = 25%.

This question belongs to: Maths Percentage

Question #2

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A person spends 30% of his income on rent, 20% of the remaining on food, and saves the rest. If he saves Rs. 11200, his income is:

A. 18000

B. 20000

C. 22000

D. 25000

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Correct Answer: Option B

Explanation:
After rent 70% left, after food 0.8×70%=56% saved. 56% = 11200 → income=20000.

This question belongs to: Maths Percentage

Question #3

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A mixture contains 20% water. In 40 litres, amount of water is:

A. 10 L

B. 8 L

C. 6 L

D. 12 L

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Correct Answer: Option B

Explanation:
20% of 40 = 8 litres.

This question belongs to: Maths Percentage

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