The units of an item available for sale during the year were as follows: There are 50 units of the item in the physical inventory at December 31. The periodic inventory system is used. Determine the ending inventory cost by (a) the first-in, first-out method, (b) the last-in, first-out method, and (c) the average cost method. Show your work.

Periodic Inventory System

An inventory accounting system where updates to inventory levels are made on a periodic basis, rather than being updated continuously.

First-In, First-Out

An inventory valuation method where the goods first purchased or produced are also the first to be sold, impacting the cost of goods sold and inventory value.

Average Cost

A calculation used in finance and economics that divides the total cost of production by the number of goods produced, yielding the cost per unit.