Two successive increases of 20% and 20% on a price is equivalent to a single increase of: MCQ with Answer and Explanation

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Two successive increases of 20% and 20% on a price is equivalent to a single increase of:

A. 40%

B. 46%

C. 42%

D. 44%

Answer: Option D

Solution (By JKSSB Mock Tests)

1.2 × 1.2 = 1.44, increase 44%.

This question belongs to: Maths Percentage

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Question #1

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If the price of sugar increases by 25%, by what percentage must consumption be reduced so that expenditure remains the same?

A. 20%

B. 30%

C. 15%

D. 25%

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Correct Answer: Option A

Explanation:
Required reduction = (R / (100 + R)) * 100. (25 / 125) * 100 = 20%.

This question belongs to: Maths Percentage

Question #2

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What percent is 250 g of 2 kg?

A. 15%

B. 12.5%

C. 10%

D. 20%

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Correct Answer: Option B

Explanation:
2 kg = 2000 g, (250/2000)×100 = 12.5%.

This question belongs to: Maths Percentage

Question #3

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20% reduction in sugar price lets a person buy 5 kg more for Rs. 100. Reduced price per kg:

A. Rs. 3

B. Rs. 5

C. Rs. 4

D. Rs. 6

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Correct Answer: Option C

Explanation:
Original price x, consumption y, xy=100. New 0.8x(y+5)=100 → 0.8×100 + 4x =100 → x=5, reduced price=Rs.4.

This question belongs to: Maths Percentage

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