A retailer offers a discount of 20% on a product. If the product’s marked price is ₹500 and the retailer still makes a profit of 12%, find the cost price of the product.
Selling price after discount = ₹500 × (1 - 0.20) = ₹400. Let cost price = C. Since profit = 12%, 400 = C × (1 + 0.12) C = 400/1.12 = ₹357.14 Answer: a) ₹357
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