The Big Rig Company, a multi-product firm, presented the information below concerning one of their products, Infusion-39:

DateTransactionQuantityCash

1/1Beginning Inventory1 000P 12

2/4Purchase2 00018

2/20Sale2 500

4/2Purchase3 00022

11/4Sale2 000

Requirement:

Compute the cost of ending inventory, assuming that Big Rig uses:

a.Periodic system, FIFO cost method;

b.Perpetual system, FIFO cost method;

c.Periodic system, average-cost method; and

d. Perpetual system, moving-average-cost method