Applying the Cost of Goods Sold Model The following amounts were obtained from the accounting records of Rabreb Supply Company: 2018 Net Sales 359,620 2019 423,150 Cost of Goods Sold: Beginning Inventory 36,800 (d) Purchases (a) 301,600 Goods Available for Sale (b) ('e) Ending Inventory 42,780 (f) Cost of Goods Sold (c) 289,700 Gross Margin 116,450 (g) Note: Gross Margin = Net Sales - Cost of Goods Sold! Required: Compute the missing amounts