TCO 8) A company purchases inventory during the year in four batches, with unit and price amounts shown below: Batch 1 – 9,500 units @ $2.10 per unit…

TCO 8) A company purchases inventory during the year in four batches, with unit and price amounts shown below:
 
Batch 1 – 9,500 units @ $2.10 per unit
Batch 2 – 4,300 units @ $2.08 per unit
Batch 3 – 3,600 units @ $2.04 per unit
Batch 4 – 7,200 units @ $2.01 per unit
 
10,800 units were sold after Batch 2 was purchased, while 3,400 units were sold after Batch 3 was purchased.
 
Required: 
-1.  Calculate cost of goods sold and ending inventory under the LIFO method, using the perpetual inventory system.
-2.  Calculate cost of goods sold and ending inventory under the LIFO method, using the periodic inventory system. (Points : 25)