The following information relates to Glassworks Ltd's inventory transactions during the month of July. Units July 1 Cost/Unit $11.70 $12.20 Amount $46,800 73,200 4. 8 Beginning inventory Purchase Sale Sale Purchase Sale 4,000 6,000 6,420 1,580 5,000 2,980 14 22 $12.45 62,250 28 All of the units sold were priced at $20 per unit. Glassworks Ltd. uses the periodic inventory system. Calculate Glassworks' cost of goods sold, gross margin, and ending inventory for the month of July using: i. FIFO ii. weighted average (Round calculations for cost per unit to 2 decimal places, e.g. 10.52 and final answers to 0 decimal places, e.g. 61,052.) Cost of Goods Sold Gross Margin Ending Inventory $ $ $ i. FIFO $ $ $ i. Weighted average