Case scenario: You are a newly hired accountant for Sushi Beeber, Inc., a retail company specializing in apparel for small pets. The company would like to expand its apparel line to include sweaters for cats. Sushi Beeber has found several manufacturers that offer competitive prices to ensure cost of goods sold is low. Because the company receives merchandise from different manufacturers and the cat sweaters will be commoditized, the company needs to develop an internal accounting system to keep track of inventory cost. You think that the weighted average cost method may help the company stay up-to-date with the inventory cost as purchase cost changes over time. Your task is to create a spreadsheet that can calculate the inventory cost based on purchases and sales for the month.

Date	Purchase/Sale	Units	Purchase Unit Cost	Sign (purchase = +1, sale = -1)	Sign for Cost of Purchase (purchase = 1, sale =0)	Sign for Cost of Sales (sale = 1, purchase = 0)	Units on Hand	Cost of Purchase	Cost of Sales	Inventory Total Cost	Weighted Average Cost
							150			$ 18,000.00	$ 120.00
1-Oct	Purchase	100	$ 125.00
1-Oct	Sale	60
3-Oct	Purchase	50	$ 126.00
4-Oct	Purchase	60	$ 131.00
4-Oct	Sale	50
4-Oct	Purchase	60	$ 133.00
7-Oct	Sale	120
7-Oct	Purchase	80	$ 135.00
8-Oct	Purchase	20	$ 135.00
8-Oct	Sale	30
8-Oct	Purchase	40	$ 137.00
9-Oct	Sale	20
9-Oct	Purchase	50	$ 139.00
9-Oct	Sale	10
9-Oct	Sale	20
10-Oct	Purchase	50	$ 139.00
10-Oct	Purchase	20	$ 140.00
11-Oct	Sale	40
11-Oct	Sale	30
14-Oct	Purchase	40	$ 145.00
14-Oct	Sale	10
15-Oct	Sale	30
15-Oct	Sale	10
16-Oct	Purchase	80	$ 145.00
17-Oct	Sale	50
17-Oct	Sale	10
18-Oct	Sale	50
18-Oct	Sale	30
21-Oct	Sale	30
21-Oct	Purchase	100	$ 144.00
22-Oct	Sale	70
23-Oct	Purchase	10	$ 144.00
24-Oct	Sale	100
25-Oct	Sale	30
25-Oct	Sale	20
28-Oct	Purchase	70	$ 144.00
28-Oct	Purchase	30	$ 144.00
29-Oct	Sale	130
30-Oct	Purchase	20	$ 146.00
30-Oct	Sale	70
31-Oct	Purchase	50	$ 146.00
31-Oct	Purchase	20	$ 146.00