If the price of wheat increases by 30%, by how much percent must consumption be reduced to keep expenditure constant? MCQ with Answer and Explanation

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If the price of wheat increases by 30%, by how much percent must consumption be reduced to keep expenditure constant?

A. 23.08%

B. 25%

C. 20%

D. 22.5%

Answer: Option A

Solution (By JKExamLibrary)

Reduction % = (30/130)×100 ≈ 23.08%.

This question belongs to: Maths Percentage

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Question #1

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Number of boys 20% more than girls, total 88. Number of boys:

A. 48

B. 40

C. 44

D. 52

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Correct Answer: Option A

Explanation:
Girls = x, boys = 1.2x, total 2.2x=88 → x=40, boys=48.

This question belongs to: Maths Percentage

Question #2

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A number increased by 25% then by 20% becomes 180. Original number:

A. 100

B. 120

C. 130

D. 110

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Correct Answer: Option B

Explanation:
x × 1.25 × 1.2 = 1.5x = 180 → x = 120.

This question belongs to: Maths Percentage

Question #3

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The present population of a town is 10,890. If it increases by 10% yearly, what was its population 2 years ago?

A. 9500

B. 10000

C. 8000

D. 9000

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Correct Answer: Option D

Explanation:
P_past = P_present / (1 + R/100)^2 = 10890 / (1.10)^2 = 10890 / 1.21 = 9000.

This question belongs to: Maths Percentage

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