PROBLEM In its first month of operations, Weatherall Company made three purchases of merchandise in the following this template. Use mathematical formulas with cell references to the Problem or work area as indicated. List the newer units first for FIFO and the older units Purchase $ Units Unit Cost 300 $ 6.00 23 400 7.00 200 8.00 Weatherall uses a periodic inventory system. It also provided the following information: Units on hand 380 Compute the cost of the ending inventory under the a. FIFO method Units Unit Cost Total Cost