7. Register these transaction in stock control card depending on costing method: Date Description 1/1/1998 Opening balance 10/1/1998 Purchasing 12/1/1998 Sales 15/1/1998 Purchase returns from 10/1/98 Purchasing 17/1/1998 Sales returns from 12/1/98 Sales Quantity 10 10 15 1 1 Price 10 15 20 15 20 Total 100 150 300 15 20 In Description Weighted Average Out Quantity unit cost Balance unit cost quantity unit cost total cost total cost antity total cost FIFO In Out Description Balance un cost quantity unit cost total cost quantity unit cost total cost uantity total cost Description In unit cost LIFO Out unit cost Balance unit cost quantity total cost quantity total cost quantity total cost