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all journal entries required for Unit Cost Lamareaux Inc. uses the perpetual inventory system. The following transactions took place during January 2021. Description Units $1 Opening inventory 100 $2 Purchase #1 10 Sale #1 80 Purchase #2 $3 20 Sale #2 40 Date Jan. 1 Jan.7 Jan. 9 Jan. 21 Jan. 24 Instructions Calculate cost of goods sold for the January 9 and 24 sales, and ending inventory using the FIFO cost flow assumption (note creating a table in Excel would be best for this answer; see examples in the chapter PowerPoint)