2. The cost of production per unit for two products, A and B, are 100 and 80(Br) respectively. In a week, the total production cost is 32000(Br). In the next week, the production cost reduces by 20%, and the total cost of producing the same number of units of each product is 25600(Br). Which of these are the equations that can be used to find the number of units of A, x, and the number of units of B, y?​