A number is increased by 10%, then increased by 25%, then decreased by 10%. Net percentage change: MCQ with Answer and Explanation

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A number is increased by 10%, then increased by 25%, then decreased by 10%. Net percentage change:

A. 20% increase

B. 23.75% increase

C. 25% increase

D. 22.5% increase

Answer: Option B

Solution (By JKSSB Mock Tests)

1.1 × 1.25 × 0.9 = 1.2375, increase 23.75%.

This question belongs to: Maths Percentage

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Practice More Percentage Questions

Question #1

What is 50 increased by 10%?

A. 70

B. 55

C. 60

D. 65

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Correct Answer: Option B

Explanation:
10% of 50 = 5. 50 + 5 = 55.

This question belongs to: Maths Percentage

Question #2

After spending 85% of his income, a man saves Rs. 4500. His income is:

A. 25000

B. 28000

C. 30000

D. 32000

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Correct Answer: Option C

Explanation:
Savings 15% = 4500, income = 4500/0.15 = 30000.

This question belongs to: Maths Percentage

Question #3

A number is erroneously multiplied by 5/3 instead of 3/5. Percentage error in calculation:

A. 180%

B. 177.78%

C. 150%

D. 166.67%

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Correct Answer: Option B

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

This question belongs to: Maths Percentage

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