Perpetual Inventory Using LIFO

Beginning inventory, purchases, and sales data for prepaid cell phones for December are as follows:

Inventory		Purchases		Sales
Dec. 1	2,100 units at $37	Dec. 10	1,050 units at $39	Dec. 12	1,470 units
		Dec. 20	945 units at $41	Dec. 14	1,260 units
				Dec. 31	630 units

a. Assuming that the perpetual inventory system is used, costing by the LIFO method, determine the cost of goods sold for each sale and the inventory balance after each sale, presenting the data in the form illustrated in Exhibit 4. Under LIFO, if units are in inventory at two different costs, enter the units with the HIGHER unit cost first in the Cost of Goods Sold Unit Cost column and LOWER unit cost first in the Inventory Unit Cost column.

Schedule of Cost of Goods Sold
LIFO Method
Prepaid Cell Phones
Date	Quantity Purchased	Purchases Unit Cost	Purchases Total Cost	Quantity Sold	Cost of Goods Sold Unit Cost	Cost of Goods Sold Total Cost	Inventory Quantity	Inventory Unit Cost	Inventory Total Cost

Part B

Perpetual Inventory Using FIFO

Beginning inventory, purchases, and sales data for prepaid cell phones for December are as follows:

Inventory		Purchases		Sales
Dec. 1	220 units at $27	Dec. 10	110 units at $29	Dec. 12	154 units
		Dec. 20	99 units at $31	Dec. 14	132 units
				Dec. 31	66 units

Assume that the business maintains a perpetual inventory system, costing by the first-in, first-out method. Determine the cost of goods sold for each sale and the inventory balance after each sale, presenting the data in the form illustrated in Exhibit 3. Under FIFO, if units are in inventory at two different costs, enter the units with the LOWER unit cost first in the Cost of Goods Sold Unit Cost column and in the Inventory Unit Cost column.

Schedule of Cost of Goods Sold
FIFO Method
Prepaid Cell Phones
Date	Purchases Quantity	Purchases Unit Cost	Purchases Total Cost	Cost of Goods Sold Quantity	Cost of Goods Sold Unit Cost	Cost of Goods Sold Total Cost	Inventory Quantity	Inventory Unit Cost	Inventory Total Cost