If A's salary is 25% more than B's salary, then by what percentage is B's salary less than A's salary? MCQ with Answer and Explanation

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If A's salary is 25% more than B's salary, then by what percentage is B's salary less than A's salary?

A. 22.5%

B. 25%

C. 30%

D. 20%

Answer: Option D

Solution (By JKSSB Mock Tests)

Let B's salary be 100. A's salary = 125. B is 25 less than A. Percentage = (25 / 125) * 100% = 20%.

This question belongs to: Maths Percentage

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Question #1

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A number is multiplied by 5/3 instead of 3/5. What is the percentage error?

A. 177.78%

B. 166.67%

C. 180%

D. 150%

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Correct Answer: Option A

Explanation:
Correct = 3x/5, wrong = 5x/3. Error % = [(5/3 - 3/5)/(3/5)]×100 = (16/9)×100 ≈ 177.78%.

This question belongs to: Maths Percentage

Question #2

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A number increased by 25% becomes 150. The number is:

A. 125

B. 115

C. 120

D. 110

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Correct Answer: Option C

Explanation:
1.25x = 150 → x = 120.

This question belongs to: Maths Percentage

Question #3

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A number increased by 20% then by 25% becomes 150. Original number:

A. 80

B. 110

C. 100

D. 90

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Correct Answer: Option C

Explanation:
x × 1.2 × 1.25 = 150 → 1.5x = 150 → x = 100.

This question belongs to: Maths Percentage

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