The cost price of an article is ₹280. A shopkeeper sells it by allowing 16% discount on its marked price and still gains 20%. What is the marked price(in ₹) of the article?

400

Cost price of the article = Rs. 280

Selling price of the article = Rs. 280 × \(\frac{120}{100}\)  = Rs. 336

Marked  price of the article = Rs. 336 × \(\frac{100}{84}\)  = Rs. 400