Units Chemicals Cans Conversion
Beginning WIP 4,000 – 4,000 3,000
Started & completed 16,000 16,000 16,000 16,000
Ending WIP inventory 5,000 5,000 – 4,000
Units accounted for 25,000 21,000 20,000 23,000
Cost Data: Total Chemicals Cans Conversion
Beginning inventory 51,900$ –$ –$ –$
Current cost 281,900 228,900 7,000 46,000
Total costs 333,800$ 228,900$ 7,000$ 46,000$
Divided by EUP 21,000 20,000 23,000
Cost per equivalent unit 13.25$ 10.90$ 0.35$ 2.00$
Cost Assignment Units Cost
Beginning WIP inventory 51,900$
Conversion 3,000 x 2.00$ 6,000
Total cost of BI transferred 59,300$
Started & completed 212,000 271,300$
Chemicals 5,000 x 10.90$ 54,500$
Conversion 4,000 x 2.00$ 8,000 62,500
Total cost accounted for 333,800$
The weighted average method is generally easier to use because the calculations are
similar. However, this method tends to obscure current period costs because the cost per
equivalent unit includes both current costs and prior costs that were in beginning
inventory. This method is most appropriate when conversions costs, inventory levels, and
raw material prices are stable.
The FIFO method is based on the work done in the current period only. This method is
most appropriate when conversion costs, inventory levels, or raw material prices
fluctuate. This method should also be used when accuracy in current equivalent unit
costs is important or when a standard cost system is used.
(CMA adapted)