Number increased by 20%. By what % should new number be decreased to get original? MCQ with Answer and Explanation

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Number increased by 20%. By what % should new number be decreased to get original?

A. 20%

B. 15%

C. 16.67%

D. 18%

Answer: Option C

Solution (By JKSSB Mock Tests)

Original 100, new 120. Decrease % = (20/120)×100 = 16.67%.

This question belongs to: Maths Percentage

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Practice More Percentage Questions

Question #1

Machine depreciates 10% per year. Present value Rs. 81,000, value 2 years ago was:

A. 1,10,000

B. 1,00,000

C. 1,20,000

D. 90,000

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Correct Answer: Option B

Explanation:
Value 2 years ago = 81000 / (0.9×0.9) = 1,00,000.

This question belongs to: Maths Percentage

Question #2

If A is twice of B, then B is what percentage less than A?

A. 50%

B. 75%

C. 100%

D. 25%

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Correct Answer: Option A

Explanation:
A = 2B. Difference is B. Percentage less = (B / A) * 100 = (B / 2B) * 100 = 50%.

This question belongs to: Maths Percentage

Question #3

In a village of 8000, 55% are below poverty line. Number not below poverty line:

A. 3200

B. 3600

C. 4000

D. 4400

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Correct Answer: Option B

Explanation:
45% of 8000 = 3600.

This question belongs to: Maths Percentage

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