Concord Corporation began the year with 9 units of marine floats at a cost of $10 each. During the year, it made the following purchases: May 5, 29 unit at $17; July 16, 19 units at $20; and December 7, 24 units at $24. Assume there are 33 units on hand at the end of the period. Concord uses the periodic approach. (a) Determine the cost of goods sold under FIFO. FIFO Cost of good sold $