Metlock Inc.just began business and made the following four inventory purchases in June June 1 June 10 June 15 June 28 144 units 192 units 192 units 144 units $1008 1536 1728 1440 $5712 A physical count of merchandise inventory on June 30 reveals that there are 192 units on hand. Using the average cost method, the amount allocated to the ending inventory on June 30 is $1728 3 51872 $1345 $1632