In this presentation we will discuss first in first out or FIFO using a periodic system as compared to a perpetual system. As we go through this, we want to keep that in mind all the time that been that we are using first in first out as opposed to some other systems lastin first out, for example, or average cost, and we’re doing so using a periodic system rather than a perpetual system. Best way to demonstrate is with examples. So we’ll go through an example problem. We’re going to be using this worksheet for our example problem. It looks like an extended worksheet or large worksheet, but it really is the best worksheet to go through in order to figure out all the components of problems that deal with these cost flow assumptions, including a first in first out lastin first out, or an average method, and using a periodic or perpetual for any of them.