JESTION 44 Which of the following inventory costing methods uses the costs of the oldest purchases to calculate the value of the ending inventory? weighted average last-in, first-out first-in, first-out specific identification QUESTION 45 The periodic inventory system is more difficult to maintain than a perpetual inventory system works well for businesses in which the inventory is large in size or dollar amount cannot be used with a specific identification costing method s involves the use of inventory costing methods QUESTION 46 Which of the following inventory costing methods is based on the actual cost of each particular unit of inventory? specific identification weighted average last-in, first-out first-in, first-out