help wuth these two please

Periodic inventory by three methods; cost of goods sold The units of an item available for sale during the year were as follaws: There are 208 units of the item in the physical ioventory of 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. FIFO and UFO 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 7,700 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? b. What is the total cost of the ending inventory according to LIFO