Shamrock Compary sells discounted shoes to the fashion-oriented consumer. The following schedule relates to the company's inventory for the month of March: Shamrock Company uses the perpetual inventory system. Calculate Shamrock Company's cost of goods sold, gross margin, and ending inventory using: 1. FIFO 11. Weighted-average (Round calculations for cost per unit to 2 decimal places, eg. 10.52 and final answers to 0 decimal piaces, es. 61,052)