Inventory Valuation Practice Problem XYz Central Billing Office purchased magnetic storage disks on the following dates and amounts. Total 150 420 Units 10 30 40 10 20 10 Price 15 January 1 beginning balance March 1 purchase May 1 purchase July 1 purchase September 1 purchase November 1 purchase 14 13 130 240 120 12 120 35 Total $1,620 Ending inventory on Dec. 31 Using FIFO, LIFO and weighted average, what is the ending cost of inventory