Do it in 30 minute, please

Question 1: Shereen Company uses a perpetual inventory system: Date Items Units Unit Cost 26 1-Sep Inventory 5-Sep Sales 12-Sep Purchase 16-Sep Sales 19-Sep Purchases 26-Sep Purchases 29-Sep Sales 12 45 50 20 50 59 Total Cost BDT 97 2,522 199 2,388 102 4,590 199 9,950 104 2,080 105 5,250 209 12,331 Instructions: Compute ending inventory at September 30 using FIFO, LIFO and moving average cost