please help

Tamarisk Corporation began operations on December 1, 2019. The only inventory transaction in 2019 was the purchase of inventory on December 10, 2019, at a cost of S24 per unit. None of this inventory was sold in 2019. Relevant information is as follows. Ending inventory units: ' December 21, 2019 December 31, 2020. by purchase date - dpcpmbpr , 2020 - July 20, 2020 During the year 2020, the following purchases and sales were made. March july sept 20 4 2 Purchases units at 385 units at 30 285 units at 34 185 units at 36 Sales April Aug The company uses the periodic inventory method. (al) Calculate average-cost per unit. (Round answer to 2 decimal places, e.e. 276.) (a2) Determine ending inventory under (1) specific identification, (2) FIFO, (3) L IFO, and (4) average- cost. (Round answer to O decimal places, e.g. 2,760.)