If the price of wheat increases by 30%, by how much percent must consumption be reduced to keep expenditure constant? MCQ with Answer and Explanation

If the price of wheat increases by 30%, by how much percent must consumption be reduced to keep expenditure constant?
A. 25%
B. 23.08%
C. 22.5%
D. 20%
Answer: Option B
Solution (By JKSSB Mock Tests)
Reduction % = (30/130)×100 ≈ 23.08%.

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Practice More Percentage Questions

Question #1
In 80 L mixture, milk:water = 5:3. Water added to make ratio 1:2:
A. 80 L
B. 90 L
C. 70 L
D. 60 L

Correct Answer: Option C


Explanation:
Milk=50 L, water=30 L. For milk:water = 1:2, water needed=100 L, add 70 L.

This question belongs to: Maths Percentage
Question #2
In an examination, 60% passed in English, 50% passed in Maths, and 20% failed in both. If 360 students passed in both, find the total number of students.
A. 800
B. 1200
C. 1000
D. 900

Correct Answer: Option B


Explanation:
Failed Eng=40%, Maths=50%. Passed both = 100 - (40+50-20) = 30%. 30% = 360 → total = 1200.

This question belongs to: Maths Percentage
Question #3
In an examination, 40% of the students failed in Mathematics, 30% failed in English, and 10% failed in both subjects. If 144 students passed in both subjects, what is the total number of students who appeared for the examination?
A. 480
B. 400
C. 300
D. 360

Correct Answer: Option D


Explanation:
Total failed percentage = Failed in Math + Failed in English - Failed in Both = 40% + 30% - 10% = 60%. Total passed = 100% - 60% = 40%. 40% of total students = 144. Total students = (144 * 100) / 40 = 360.

This question belongs to: Maths Percentage