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

Question

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

A. 15%

B. 25%

C. 20%

D. 30%

Answer: Option C

Solution (By JKSSB Mock Tests)

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

This question belongs to: Maths Percentage

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Question #1

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65% of a number is 21 less than 80%. Number is:

A. 130

B. 120

C. 140

D. 150

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Correct Answer: Option C

Explanation:
0.8x - 0.65x = 21 → 0.15x = 21 → x = 140.

This question belongs to: Maths Percentage

Question #2

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80% passed English, 70% Maths, 60% both. % failed both:

A. 15%

B. 20%

C. 5%

D. 10%

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Correct Answer: Option D

Explanation:
Pass at least one = 80+70-60=90%, fail both = 10%.

This question belongs to: Maths Percentage

Question #3

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To pass need 36%. Student gets 45 marks, fails by 27. Max marks:

A. 180

B. 200

C. 225

D. 250

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Correct Answer: Option B

Explanation:
Pass = 72, 36% M = 72 → M = 200.

This question belongs to: Maths Percentage

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