The beginning inventory at Midnight Supplies and data on purchases and sales for a three-month period ending March 31 are as follows:

Date		Transaction	Number of Units		Per Unit		Total
Jan. 1		Inventory	7,500		$75.00		$562,500
10		Purchase	22,500		85.00		1,912,500
28		Sale	11,250		150.00		1,687,500
30		Sale	3,750		150.00		562,500
Feb. 5		Sale	1,500		150.00		225,000
10		Purchase	54,000		87.50		4,725,000
16		Sale	27,000		160.00		4,320,000
28		Sale	25,500		160.00		4,080,000
Mar. 5		Purchase	45,000		89.50		4,027,500
14		Sale	30,000		160.00		4,800,000
25		Purchase	7,500		90.00		675,000
30		Sale	26,250		160.00		4,200,000

Required:

1. Record the inventory, purchases, and cost of goods sold data in a perpetual inventory record similar to the one illustrated in Exhibit 4, using the last-in, first-out method. 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. Round unit cost to two decimal places, if necessary.

Midnight Supplies Schedule of Cost of Goods Sold LIFO Method For the Three Months Ended March 31
	Purchases			Cost of Goods Sold			Inventory
Date	Quantity	Unit Cost	Total Cost	Quantity	Unit Cost	Total Cost	Quantity	Unit Cost	Total Cost
Jan. 1								$	$
Jan. 10		$	$
Jan. 28					$	$
Jan. 30
Feb. 5
Feb. 10
Feb. 16
Feb. 28
Mar. 5
Mar. 14
Mar. 25
Mar. 30
Mar. 31	Balances					$			$

2. Determine the total sales, the total cost of goods sold, and the gross profit from sales for the period.

Total sales	$
Total cost of goods sold	$
Gross profit	$

3. Determine the ending inventory cost as of March 31. $

Feedback

1. When the perpetual inventory system is used, revenue is recorded each time a sale is made along with an entry to record the cost of the merchandise sold. LIFO means the last units purchased are assumed to be the first to be sold. Therefore after each sale, the remaining or ending inventory is made up of the first or earliest purchases. Think of your inventory in terms of "layers." The first sale comes from the most recent purchase layer. When deciding which layer to use for costing of each sale ask yourself: "Is there enough inventory left in the most recent purchase to cover the sale?" If not, the other units sold should be taken from the second most recent purchase layer, which then contains the most recent costs. Continue this process for each transaction. If you have done this problem correctly, the remaining units making up ending inventory will be costed at the January 1 beginning inventory and January 10 unit purchase price.

2. Total sales are obtained by taking the number of units sold times their sale prices for all sales and adding these amounts together. The total cost of goods sold can be obtained by adding the LIFO costs in the perpetual inventory record. Sales minus cost of goods sold equals gross profit.

3. The ending inventory is what is left after subtracting the cost of goods sold from the goods available for sale. Multiply the units remaining after the last sale by their corresponding earliest layer cost to determine the LIFO cost of the ending inventory.