You are provided with the following information for Sheffield Inc. for the month ended June 30, 2019. Sheffield uses the periodic system for inventory. Calculate weighted-average cost per unit. (Round answer to 2 decimal places, e. g. 5.25.) Weighted-average cost per unit Calculate ending inventory, cost of goods sold, gross profit under each of the following methods. (1) LIFO (2) FIFO. (3) Averagecost. (Round overage-cost method answers to 2 decimal places, es. 1,250.25 and other answers to 0 decimal places, es. 1,250. Use weighted-average unit cost rounded to 2 decimal places for computations)