Please calculate the cost of goods sold under FIFO and average cost method for the company.. Kegin Company sells many products. Whamo is one of its popular items. Below is an analysis of the inventory purchases and sales of Whamo for March. Kegin uses a periodic inventory system. Sales Purchases Units Unit Cost Units Selling Price/Unit 3/1 Beginning inventory 100 $40 3/3 Purchase 60 $50 3/4 Sales 70 $80 3/10 Purchase 200 $55 3/16 Sales 80 $90 3/19 Sales 60 $90 3/25 Sales 70 $90 3/30 Purchase 40 $60