Finding Unknown Balances For each of the cases in the list below, find the unknowns designated by letters.

CASE 1 CASE 2 CASE 3 CASE 4 Finished-goods inventory, 1/1 $ 5,000 $ 4,000 $ 7,800 Sac Direct material used 8,000 6,000 3,600 5,000 Direct labor 13,000 11,000 8,000 6,000 Factory overhead 7,000 D 13,000 7,000 Purchases of direct material 9,000 7,000 8,000 8,000 Sales 42,000 31,800 E 40,000 Accounts receivable, 1/1 2,000 1,400 3,000 400 Accounts receivable, 12/31 6,000 2,100 3,000 2,800 Cost of goods sold A 22,000 28,000 15,000 Accounts payable, 1/1 3,000 1,700 1,600 300 Accounts payable, 12/31 1,800 1,500 1,800 1,200 Finished-goods inventory, 12/31 B 5,300 IP 7,600 Gross profit 11,300 C 10,000 25,000 Work in process, 1/1 -0- 800 1,300 2,000 Work in process, 12/31 -0- 3,000 300 2,500