Refer to the information in Exercise 18-25.

In Exercise 18-25, WaferCo is a fast-growing manufacturer of computer chips. Direct materials are added at the start of the production process. Conversion costs are added evenly during the process. Some units of this product are spoiled as a result of defects not detectable before inspection of finished goods. Spoiled units are disposed of at zero net disposal value. WaferCo uses the weighted-average method of process costing. Summary data for September 2014 are as follows:

1. Do Exercise 18-25 using the FIFO method of process costing.
2. Should WaferCo’s managers choose the weighted-average method or the FIFO method? Explainbriefly.

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Physical Units Direct Conversion 1,200 142,321 S 16,314 100%-30% Computer Chips) Materials Costs Work in Degree of completion of begirnning work in process Started during September Good units completed and transferred out during September Work in process, ending inventory (September 30) 2257 2,300 520 Degree of completion of ending work in process Total costs added during September Normal spoilage as a percentage of good units Degree of completion of normal spolilage Degree of completion of abnormal spoilage 20% $573,278S257,376 100% 1596 100961 100% 100% 100% 096|