Problem 6-9A Shamrock Inc. began operations on July 1. It uses a perpetual inventory system. During July, the company had the following purchases and soles July 1 July 6 uly11 110 uly 14 uly 275118 12 $103 July 27 Calculate average cost for each unit. (For calculation and answers purpose round unit costs to 2 decimal places, g. 15.25.) uly 1 uly 11 uly 14 July 21 uly 27s Determine the ending inventory under a perpetual inventory system using (1) FIFO, (2) moving-average, and (3) LIFO. (For calculation and answers purpose round unit costs to 2 decimal places, e.g. 15.25 and ending inventory values to O decimal places, e-g. 515) The ending inventory under a perpetual inventory system s Which costing method produces the highest ending inventory valuation? method produces the highest ending inventory valuation