i do need help with thes. pleas help

2. From the purchase data of Sneakers below, find for each method given that the ending inventory is 45 units. a) The cost of ending inventory (round the average unit cost to the nearest cent) b) The cost of goods sold. Date Units purchased Cost per unit January 1 20 $55 April 1 40 $60 July 1 50 $60 1) (10 points) Use weighted average method a) b) 2) (10 points) Use FIFO method a) b) 3) (10 points) Use LIFO method a) b)