If the price of rice decreases by 20%, by what percentage can consumption be increased without changing expenditure? MCQ with Answer and Explanation

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If the price of rice decreases by 20%, by what percentage can consumption be increased without changing expenditure?

A. 33.33%

B. 20%

C. 25%

D. 30%

Answer: Option C

Solution (By JKSSB Mock Tests)

Required increase = (R / (100 - R)) * 100. (20 / 80) * 100 = 25%.

This question belongs to: Maths Percentage

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Question #1

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The salary of a person was first increased by 20% and then decreased by 20%. If his original salary was Rs. 5000, what is his final salary?

A. Rs. 4900

B. Rs. 4920

C. Rs. 4800

D. Rs. 4600

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Correct Answer: Option C

Explanation:
5000 × 1.2 × 0.8 = 5000 × 0.96 = 4800.

This question belongs to: Maths Percentage

Question #2

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Difference between SP at 18% profit and 6% loss is Rs. 144. CP:

A. 600

B. 550

C. 500

D. 650

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Correct Answer: Option A

Explanation:
1.18CP - 0.94CP = 0.24CP = 144 → CP = 600.

This question belongs to: Maths Percentage

Question #3

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The population of a town is 20,000. It increases by 5% annually. What will be the population after 2 years?

A. 21000

B. 22050

C. 22000

D. 22100

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Correct Answer: Option B

Explanation:
Population = 20000 * (1.05)^2 = 20000 * 1.1025 = 22050.

This question belongs to: Maths Percentage

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