Question : The cost of two types of rice is Rs 60 per kg and Rs 84 per kg. If both the rice is mixed in the ratio of 1 : 1, then what should be the price of a mixed variety of rice per kg?

Question : In what ratio rice of INR 20 per kg be mixed with rice of INR 34 per kg, so that the mixture is worth INR 28 per kg?

Question : The ratio in which a man must mix rice at Rs. 10.20 per kg and Rs. 14.40 per kg to make a mixture worth Rs. 12.60 per kg, is:

Question : A trader buys 20 kg of rice at Rs. 30 per kg and another 20 kg of a different variety of rice also at Rs. 30 per kg. He then mixes them and sells the mixture at Rs. 33 per kg. What is his percentage of profit?

Question : The average weight of 10 boys is increased by 3kg if one of them weighing 40 kg is replaced by a new boy. The weight of the new boy is: