The beginning inventory was 440 units at a cost of $10 per unit. Goods available for sale during the year were 1,720 units at a total cost of $19,020. In May 740 units were purchased at a total cost of $8,140. The only other purchase transaction occurred during October. Ending ibventory was 760 units. Required: a. Calculate the number of units purchased in October and the cost per unit purchased in October. Purchased in October Number of units Cost per unit b-1. Assume the periodic inventory system is used. Calculate cost of goods sold and ending inventory using FIFO method. (Enter all values as a positive value.) Periodic FIFO Cost of Goods Sold Cost of Cost of Goods Available for Sale Cost of Goods # of Cost per Available for units unit Sale $ 0 Inventory Balance # of units in Cost per Ending ending unit Inventory inventory # of units sold Cost per unit Goods Sold Beg. Inventory Purchases: May October 0 0 0 0 0 $ 0 0 $ 0 $ Total