During the year, Trombley Incorporated has the following inventory transactions Unit Cost $22 21 20 18 Number Date Jan. 1 Mar. 4 Jun. 9 Nov. 11 Transaction Beginning inventory Purchase Purchase Purchase of Units 20 25 30 30 Total Cost $ 440 525 600 540 105 $2,105 For the entire year, the company sells 81 units of inventory for $30 each