Goldie's Company's inventory records show the following transactions for the month of October:

Work through the following in regards to the information given above :

a. Ending inventory, assuming a periodic system and FIFO

b. Cost of goods sold, assuming a periodic system and average cost

c. Ending inventory, assuming a perpetual system and LIFO

d. Cost of goods sold, assuming a perpetual system and FIFO

Purchases Sales Units Unit Cost Units Selling Price per Unit October 1 500 $1.45 October 4 280 $6.20 5 200 1.56 10 700 6.20 9 600 1.75 14 100 7.25 12 150 1.80 17 200 7.25 18 1,000 1.82 27 450 7.50