In what proportion must a grocer mix sugar at ₹ 48 per kg and ₹ 28 per kg so that the mixture is worth ₹ 40 per kg?

A shopkeeper has 500 kg of tea, part of which he sells at 8% profit and the rest at 18% profit. The shopkeeper gains 10% on the whole. The quantity (in kg) he sold at 8% profit is:

Type A rice costs ₹25/kg and type B costs ₹35/kg. They are mixed together and the mixture is sold at ₹36/kg at a profit of 20%. Find the ratio in which type A and type B rice were mixed.