Problem 7 - A Missing Amounts in Cost of Goods Sold Case 1 Case 2 Beginning inventory Case 3 $ (a) Purchases (gross) $ 1,000 $ 800 10,000 5,200 8,000 Purchase returns 500 (c) 50 Purchase discounts 100 100 150 Transportation-in 200 400 (e) Goods available for sale 12,000 6,300 (f) Ending inventory (b) 800 200 Cost of goods sold 7,500 (d) 9,000 Requirement: For each of the above independent cases, find the missing amounts.