In its first month of operations, Cerretti Company made three purchases of merchandise in the following sequence: (1) 300 units at $6, (2) 400  units at $8, and (3) 500 units at $9. Assuming there are 300 units on 
hand, compute the cost of the ending inventory under (a) the FIFO method
 and (b) the LIFO method. Ceretti uses a periodic inventory system.
(a)          The ending inventory under FIFO consists of 300 units at $9 for a total allocation of $2,700.
 (b)         The ending inventory under LIFO consists of 300 units at $6 for a total allocation of $1,800.
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2. In its first month of operations, Cerretti Company made three purchases of merchandise in the following sequence