Question 3 DEF Ltd, using a perpetual inventory system, entered into the following purchases and sales transactions for March. Date Activities Unit acquired at cost Unit sold at retail Mar. I Beginning Inventory 5 units @ RM500/unit Mar. 5 Purchase 20 units @ RM550/unit Mar. 9 Sales 21 units @ RM850/unit Mar. 18 Purchase 6 units @ RM600/unit Mar. 25 Purchase 10 units @ RM620/unit Mar. 29 Sales 8 units RM950/unit Totals 41 units 29 units Required: a) Compute cost of goods available for sale and the number of units available for sale. (4 marks) b) Compute the number of units in ending inventory. (3 marks) Compute the cost assigned to ending inventory using (1) FIFO, (1) LIFO, and (iii) weighted average. (Round per unit costs to three decimals, but inventory balances to the RM.) (12 marks) d) Compute gross profit earned by the company for each of the four costing methods in part c