Larkspur, Inc. uses a periodic inventory system. Its records show the following for the month of May, in which 80 units were sold. DateExplanationUnitsUnit CostTotal Cost
May 1Inventory28$9$252
15Purchase2610260
24Purchase3911429
Total93 $941
Required:
1. Calculate the weighted-average unit cost. (Round answer to 3 decimal places, e. g. 5.125.)
2. Calculate the ending inventory at May 31 using the FIFO, LIFO and average-cost methods. (Round answers to 0 decimal places, e. g. 125.)

Explanation:

Date     Unit    Unit cost    Total       Goods sold     Cost   Total

May 1    28         9                252              28                9       252

May 15  26        10               260              26                10      260

May 24 39         11                 429             26               11        286

Total      93                             941              80

1) Weighted average unit cost = 941/93 = $10.118

FIFO method

2)Ending inventory  (93-80)*11 =$ 143

FIFO method assumes that the first set of inventory are the first to be sold

LIFO method

LIFO assumes that the last set of inventory are the first to be sold

    Goods Sold       Cost     Total

            39                  11       429

            26                  10      260

             15                  9         135

Ending Inventory = (93-80)*9 = $117

Average Cost Method

Ending Inventory = 13 * 10.118 =$131.534

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