If the price of a commodity decreases by 10%, by what percentage can the consumption increase so that the expenditure remains the same? MCQ with Answer and Explanation

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If the price of a commodity decreases by 10%, by what percentage can the consumption increase so that the expenditure remains the same?

A. 10%

B. 11.11%

C. 12.5%

D. 9.09%

Answer: Option B

Solution (By JKSSB Mock Tests)

Required increase = (10 / 90) * 100 = 100 / 9 = 11.11%.

This question belongs to: Maths Percentage

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Practice More Percentage Questions

Question #1

What percent of 80 is 24?

A. 35%

B. 40%

C. 25%

D. 30%

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Correct Answer: Option D

Explanation:
(24/80) × 100 = 30%.

This question belongs to: Maths Percentage

Question #2

Rice price reduced by 10%, a man buys 4 kg more for Rs. 144. Reduced price per kg is:

A. Rs. 3.4

B. Rs. 3.2

C. Rs. 3.8

D. Rs. 3.6

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Correct Answer: Option D

Explanation:
Original x, xy=144. 0.9x(y+4)=144 → 129.6+3.6x=144 → x=4, reduced = 3.6.

This question belongs to: Maths Percentage

Question #3

A can do a piece of work in 20 days. B is 25% more efficient than A. How many days will B alone take to do the work?

A. 16 days

B. 18 days

C. 14 days

D. 15 days

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Correct Answer: Option A

Explanation:
Efficiency ratio A:B = 100:125 = 4:5. Time ratio = 5:4. B's time = (4/5)×20 = 16 days.

This question belongs to: Maths Percentage

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