Price of a commodity falls by 15%. To keep expenditure constant, consumption must increase by: MCQ with Answer and Explanation

Price of a commodity falls by 15%. To keep expenditure constant, consumption must increase by:

A. 15%

B. 20%

C. 18%

D. 17.64%

Answer: Option D

New price 0.85, consumption multiplier needed = 1/0.85 ≈ 1.17647, increase 17.64%.

This question belongs to: Maths Percentage

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Question #1 Report Error

A trader sells an article at 15% loss. If he had sold it for Rs. 250 more, he would have gained 10%. Find the cost price.

A. Rs. 1100

B. Rs. 900

C. Rs. 1000

D. Rs. 800

Correct Answer: Option C

Explanation:
SP1 = 0.85CP, SP2 = 1.1CP. Difference = 0.25CP = 250 → CP = 1000.

This question belongs to: Maths Percentage

Question #2 Report Error

85% passed English, 75% Maths, 65% both. % failed both:

A. 5%

B. 12%

C. 8%

D. 10%

Correct Answer: Option A

Explanation:
Pass at least one = 85+75-65=95%, fail both = 5%.

This question belongs to: Maths Percentage

Question #3 Report Error

A mixture contains 20% water. In 40 litres, amount of water is:

A. 12 L

B. 8 L

C. 6 L

D. 10 L

Correct Answer: Option B

Explanation:
20% of 40 = 8 litres.

This question belongs to: Maths Percentage