A number is increased by 10% and then decreased by 10%. What is the net change? MCQ with Answer and Explanation

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A number is increased by 10% and then decreased by 10%. What is the net change?

A. 1% decrease

B. 2% decrease

C. No change

D. 1% increase

Answer: Option A

Solution (By JKSSB Mock Tests)

Net change = x^2 / 100 % decrease. 10^2 / 100 = 1% decrease.

This question belongs to: Maths Percentage

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Practice More Percentage Questions

Question #1

A's marks 25% more than B, B's 20% less than C. A=150, find C:

A. 120

B. 140

C. 150

D. 130

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Correct Answer: Option C

Explanation:
A=1.25B, B=0.8C → A=1.25×0.8C = C, so C=150.

This question belongs to: Maths Percentage

Question #2

A's salary is 20% less than B's salary. By what percent is B's salary more than A's?

A. 20%

B. 27.5%

C. 25%

D. 22.5%

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Correct Answer: Option C

Explanation:
Let B=100, A=80. B is (20/80)×100 = 25% more than A.

This question belongs to: Maths Percentage

Question #3

If 25% of a number is subtracted from 30% of the same number, the result is 15. Find the number.

A. 350

B. 250

C. 200

D. 300

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Correct Answer: Option D

Explanation:
0.3x - 0.25x = 0.05x = 15 → x = 300.

This question belongs to: Maths Percentage

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