Exercise 220 Three items are missing in each of the following columns and are identified by letter. Sales revenue (a) $840,000 Sales returns and allowances 15,000 22,000 Sales discounts 10,000 15,000 Net sales 440,000 (d) Beginning inventory (b) 300,000 Cost of goods purchased 220,000 (e ) Ending inventory 170,000 303,000 Cost of goods sold 252,000 575,000 Gross profit (c) (f)