January 1 inventory April 1 June 1 November 1 Number purchased 40 60 50 55 205 Cost of ending inventory Cost per unit $4 7 8 9 Total 160 420 400 495 $1,475 $ a. Calculate the cost of ending inventory using the weighted-average method (ending inventory shows 61 units). (Round the "average unit cost" and final answer to the nearest cent.)