Inventory data for Williams Door Products Co. for the month of September are as follows:

a) Required: Compute the ending inventory and cost of goods sold assuming the company uses average cost and a periodic inventory system.

b) Required: Compute the ending inventory and cost of goods sold assuming the company uses FIFO.

c) Required: Compute the ending inventory and cost of goods sold assuming the company uses LIFO and a periodic inventory system.

d) Required: Compute the ending inventory and cost of goods sold assuming the company uses average cost and a perpetual inventory system.

e) Required: Compute the ending inventory and cost of goods sold assuming the company uses LIFO and a perpetual inventory system.

Date

Activity

# (units)

$ unit cost

$ price per unit

September 1

beg balance

20

75

September 5

purchase

80

78

September 8

sale

20

110

September 12

sale

65

115

September 24

purchase

32

81

Sptember 25

sale

45

112

September 30

purchase

10

85