Sheridan Company had a beginning inventory on January 1 of 160 units of Product 4-18-15 at a cost of $20 per unit. During the year, the following purchases were made Mar 15 400 units at $24 Sept. 4 300 units at $33 July 20 220 units at $28 Dec 2 100 units at $30 975 units were sold. Sheridan Company uses a periodic inventory system (a) Determine the cost of goods available for sale The cost of goods available for sale $