Kingbird, Inc. began the year with 10 units of marine floats at a cost of $11 each. During the year, it made the following purchases: May 5, 35 unit at $17; July 16, 15 units at $21; and December 7, 20 units at $25. Assume there are 25 units on hand at the end of the period. Kingbird uses the periodic approach. Determine the cost of goods sold under FIFO and LIFO than calculate average cost and ending inventory under FIFO and LIFO