alleryजर साखरेची किंमत 25% ने वाढली, तर खर्च अपरिवर्तित ठेवण्यासाठी वापर किती टक्क्यांनी घसरला पाहिजे?
A15%
B20%
C25%
D30%
Answer & Solution
Correct answer: B. 20%
आवश्यक फॉल = r/(100+r) x 100 = 25/125 x 100 = 20%.
**तपासा:** नवीन खर्च = 1.25 x 0.80 = 1.0, अपरिवर्तित.
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