After allowing a discount of 15% on the marked price of an article, it was sold for ₹425. Had the discount not been given, the profit would have been 25%. What was the cost price (in ₹) of the article?

325 450 500 400

400

Selling price of the article = 425 Discount = 15% Marked price = 425 × \(\frac{100}{85}\) = 500 Profit is = 25% So cost price = 500 × \(\frac{100}{125}\) = 400