A trader sells two brands of petrol; one is Extra Premium and other one is speed. He mixes 12 litres Extra Premium with 3 litres of speed and by selling this mixture at the price of Extra Premium he gets a profit of 9.09. If the price of Extra Premium Rs. 48 per litre, then the price of Speed is:

• ক Rs. 38 per litre
• খ Rs. 28 per litre ✅ সঠিক উত্তর
• গ None of These
• ঘ Rs. 42 per litre