Sheffield Company sells many products. Gizmo is one of its popular items. Below is an analysis of the inventory purchases and sales of Gizmo for the month of March. Sheffield Company uses the periodic inventory system. Purchases Sales Units Units Selling Price/Unit Unit Cost $40 $50 3/1 114 Beginning inventory Purchase 3/3 65 3/4 Sales 65 $90 Purchase 228 $55 3/10 3/16 Sales 73 3/19 Sales 106 $100 $100 $100 3/25 Sales 65 3/30 Purchase 49 $60