If the price of a book is increased by 20%, its new price is Rs. 180. Original price was: MCQ with Answer and Explanation

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If the price of a book is increased by 20%, its new price is Rs. 180. Original price was:

A. 160

B. 140

C. 170

D. 150

Answer: Option D

Solution (By JKSSB Mock Tests)

Let original price be P. 1.2P = 180 → P = 150.

This question belongs to: Maths Percentage

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Practice More Percentage Questions

Question #1

What is 5% of 300?

A. 25

B. 15

C. 10

D. 20

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Correct Answer: Option B

Explanation:
5% of 300 = (5 / 100) * 300 = 15.

This question belongs to: Maths Percentage

Question #2

A sum of money becomes Rs. 2800 in 2 years and Rs. 3250 in 5 years at simple interest. Find the rate of interest.

A. 6%

B. 7%

C. 5%

D. 4%

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Correct Answer: Option A

Explanation:
SI for 3 years = 3250 - 2800 = 450, SI per year = 150. Principal = 2800 - 2×150 = 2500. Rate = (150/2500)×100 = 6%.

This question belongs to: Maths Percentage

Question #3

If the radius of a circle is increased by 100%, the area increases by:

A. 400%

B. 300%

C. 200%

D. 500%

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Correct Answer: Option B

Explanation:
Area proportional to radius². New radius 2r, area 4 times, increase = 300% (i.e., 4-1 = 3 times = 300%).

This question belongs to: Maths Percentage

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