Redster Company is a manufacturing firm. Presented below is information concerning one of its products, called Ander.

Using an Excel spreadsheet, compute the cost of goods sold under the following situations:

Date	Transaction	Quantity	Price/Cost
1/1	Beginning inventory	2,900	$10
2/12	Purchase	3,300	$15
3/2	Sale	2,400	$28
4/18	Purchase	4,500	$18
5/31	Sale	3,800	$30

Periodic system, FIFO cost flow

Perpetual system, FIFO cost flow

Periodic system, LIFO cost flow

Perpetual system, LIFO cost flow

Periodic system, weighted-average cost flow

Perpetual system, moving-average cost flow