Cullumber Company uses a perpetual inventory system. The company began 2024 with 1,000 lamps in inventory at a cost of $10 per unit During 2024, Cullumber had the following purchases and sales of lamps: All purchases and sales are on account (a) Your answer is incorrect. Calculate the cost of goods sold and ending inventory using weighted average. (Round the weighted average cost per unit to 2 decimal places, eg. 5.27 and final answers to 0 decimal places, eg. 5,275.)