RBI Grade B Officers 2016 Sep shift 2 Paper

A shopkeeper purchased 25 kg of variety A rice at Rs. x per kg and 15 kg of variety B rice at Rs. ‘x-5’ per kg. While selling the whole quantity of variety A and variety B rice, the shopkeeper incurred a loss of 20% and 10% respectively. The total selling price of variety A rice was Rs. 230 more than that of variety B rice. Had the two varieties been mixed and sold at an overall profit of 20%, what would have been the selling price (per kg )?