1. Based on the following information, calculate the missing amount.

Sales $28,000 Cost of goods sold ?

Beginning inventory ? Gross profit 10,800

Purchases 18,000 Expenses ?

Ending inventory 12,600 Net income 3,600

1. Beginning inventory, $16,200; cost of goods sold $12,600; Expenses $1,800
2. Beginning inventory, $23,400; COGS $10,800; Expenses, $7,200
3. Beginning inventory, $9,000; COGS $14,400; Expenses, $3,600
4. Beginning inventory, $12,600; COGS $18,000; Expenses, $7,200
5. Beginning inventory, $19,800; COGS $25,200; Expenses, $14,400

1. $99,000
2. $100,000