Replacement: (1) There is 360 ml milk, which is packed in 3 small cups and 1 large cup, just full. The capacity of a small cup is half that of a large one. What are the capacities of small and large cups? (2) It cost 252 yuan to buy 4 desks and 9 chairs at school. It is known that the price of chairs is exactly 1/3 (one third) of that of desks. Can you find out how much a chair and a table are through the replacement strategy? (3) One pig can be exchanged for three sheep, and one cow can be exchanged for six pigs. Q: How many sheep can a cow change? (4)6 small boxes and 2 large boxes. There are 300 pairs of new sports shoes. There are as many sports shoes in two small cartons as in 1 large carton. How many pairs of sports shoes are there in each big carton? How about each small carton? (5)5 kg of apples and 4 kg of pears * * * In 46 yuan, the price of 1 kg of apples is 3/2 of that of 1 kg of pears. How much are apples and pears per kilogram? (6) Three brushes 1 pen ***9.6 yuan. The unit price of a pen is five times that of a brush. Unit price assumption of pens and brushes: If there are x pens in the front row, there are 1200-x pens1.5x+1080 = 2.5 * (1200-x) x = 480,1.