Total cost price = (120 * 40) + (150 * 30) = 4800 + 4500 = ₹9,300. Total selling price = (120 + 150) * 45 = 270 * 45 = ₹12,150. Total profit = Selling price - Cost price = 12,150 - 9,300 = ₹2,850. Correct answer: B) ₹2,850
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