A's salary increased by 20% then decreased by 20%. Original salary 5000, final salary: MCQ with Answer and Explanation

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A's salary increased by 20% then decreased by 20%. Original salary 5000, final salary:

A. 4600

B. 5200

C. 5000

D. 4800

Answer: Option D

Solution (By JKSSB Mock Tests)

5000 × 1.2 × 0.8 = 4800.

This question belongs to: Maths Percentage

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Question #1

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Ratio 2:5, second part expressed as percentage of total is:

A. 65.5%

B. 60%

C. 70%

D. 71.43%

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Correct Answer: Option D

Explanation:
Second part = 5/(2+5) × 100 ≈ 71.43%.

This question belongs to: Maths Percentage

Question #2

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A student multiplied a number by 4/5 instead of 5/4. What is the percentage error?

A. 30%

B. 25%

C. 45%

D. 36%

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Correct Answer: Option D

Explanation:
Error = (5/4 - 4/5)x = (9/20)x. % Error = ((9/20) / (5/4)) * 100 = (9/25) * 100 = 36%.

This question belongs to: Maths Percentage

Question #3

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In an election between two candidates, one got 35% of the total valid votes and lost by 1500 votes. Find the total valid votes.

A. 4500

B. 5500

C. 5000

D. 4000

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Correct Answer: Option C

Explanation:
Loser = 35%, Winner = 65%. Difference = 30%. 30% of Total = 1500. Total = 5000.

This question belongs to: Maths Percentage

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