All three questions

Refer to the information for Filimonov Inc. and assume that the company uses a perpetual inventory system. Required: Calculate the cost of goods sold and the cost of ending inventory using the FIFO inventory costing method. Refer to the information for Filimonov Inc. and assume that the company uses a perpetual inventory system. Required: Calculate the cost of goods sold and the cost of ending inventory using the LIFO inventory costing method. Refer to the information for Filimonov Inc. and assume that the company uses a perpetual inventory system. Required: Calculate the cost of goods sold and the cost of ending inventory using the average cost method. Refer to the information for Filimonov Inc. and assume that the company uses a perpetual inventory system. Required: Calculate the cost of goods sold and the cost of ending inventory using the FIFO inventory costing method. Refer to the information for Filimonov Inc. and assume that the company uses a perpetual inventory system. Required: Calculate the cost of goods sold and the cost of ending inventory using the LIFO inventory costing method. Refer to the information for Filimonov Inc. and assume that the company uses a perpetual inventory system. Required: Calculate the cost of goods sold and the cost of ending inventory using the average cost method