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. 30%

C. 20%

D. 25%

Answer: Option D

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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If 50% of a number is added to another, second becomes 140% of itself. Ratio of first to second:

A. 3:5

B. 4:5

C. 5:4

D. 2:5

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Correct Answer: Option B

Explanation:
0.5F + S = 1.4S → 0.5F = 0.4S → F/S = 0.4/0.5 = 4/5.

This question belongs to: Maths Percentage

Question #2

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Increase 500 by 10%. Result is:

A. 505

B. 550

C. 510

D. 600

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Correct Answer: Option B

Explanation:
500 × 1.1 = 550.

This question belongs to: Maths Percentage

Question #3

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A man buys an article for Rs. 80 and marks it at Rs. 120. He gives a discount of 10% on the marked price. What is his profit percent?

A. 35%

B. 33%

C. 30%

D. 32%

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Correct Answer: Option A

Explanation:
SP = 120×0.9=108. Profit = 28, % = (28/80)×100 = 35%.

This question belongs to: Maths Percentage

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