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Cost of 1 dozen eggs = ₹48. Cost of 15 dozen eggs = 15 * 48 = ₹720. New price after 25% increase = 48 + (0.25 * 48) = 48 + 12 = ₹60. New cost of 15 dozen eggs = 15 * 60 = ₹900. Correct answer: A) ₹720; ₹900
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