Need help asap, much appreciatted!! FIFO and LIFO costs under perpetual inventory system The following units of an item were available for sale during the year: The firm uses the perpetual inventory system, and there are 23 units of the item on hand at the end of the year. a. What is the total cost of the ending inventory according to FIFO? $ X b. What is the total cost of the ending inventory according to LIFO? Periodic inventory by three methods; cost of goods sold The units of an item available for sale during the year were as follows: There are 80 units of the item in the physical inventory at December 31 . The periodic inventory system is used. Determine the ending inventory cost and the cost of goods sold by three methods. In your calculations round average unit cost to the nearest cent, and round all other calculations and your final answers to the nearest dollar