alleryयदि चीनी की कीमत 25% बढ़ जाती है, तो व्यय को अपरिवर्तित रखने के लिए खपत में कितने प्रतिशत की कमी होनी चाहिए?
A15%
B20%
C25%
D30%
Answer & Solution
Correct answer: B. 20%
आवश्यक गिरावट = r/(100+r) x 100 = 25/125 x 100 = 20%।
**चेक करें:** नया खर्च = 1.25 x 0.80 = 1.0, अपरिवर्तित।
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