Even after allowing two successive discounts of 20% and 10% on the marked price, a dealer makes a profit of 8%. If the article cost him ₹2500, its marked price (in ₹) is:

He must realise $2500\times 1.08$ = ₹2700, and that is $0.80\times 0.90=0.72$ of the marked price, so the marked price is 2700/0.72 = ₹3750. Adding the discounts to 30% and dividing by 0.70 gives ₹3857; using only one of them gives 2700/0.8 = ₹3375 or 2700/0.9 = ₹3000.