27th Edition
WARREN + 5 others
ISBN: 9781337272094




27th Edition
WARREN + 5 others
ISBN: 9781337272094
Textbook Problem

Weighted average cost flow method under perpetual inventory system

The following units of a particular item were available for sale during the calendar year:

Jan. 1 Inventory 30,000 units at $30.00
Mar. 18 Sale 24,000 units
May 2 Purchase 54,000 units at $31.00
Aug. 9 Sale 45,000 units
Oct. 20 Purchase 21,000 units at $32.10

The firm uses the weighted average cost method with a perpetual inventory system. Determine the cost of merchandise sold for each sale and the inventory balance after each sale. Present the data in the form illustrated in Exhibit 5.

To determine

Perpetual Inventory System:

Perpetual Inventory System refers to the inventory system that maintains the detailed records of every inventory transactions related to purchases, and sales on a continuous basis. It shows the exact on-hand-inventory at any point of time.

Weighted -average cost method:

Under weighted average cost method, the company calculates a new average cost after every purchase is made. It is determined by dividing the cost of goods available for sale by the units on hand.

To determine: cost of merchandise sold for each sale after each sale as on October 31.


Calculate the cost of merchandise sold and ending inventory. (Weighted average method)

Figure (1)

Working Notes:

Calculate the weighted average unit cost after May 2 purchases

Weighted average method
Quantity Unit cost Total cost of inventory in hand
6,000 units $30 180,000
54,000 units $31 1,674,000
60,000 units $ 1,854,000

Weighted average unit cost = Total cost of inventory in handTotal quantity=$1,854,00060,000=$30

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