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Equivalent Units and Related Costs; Cost of Production Report; Entries The balance in the account Work in Process-Filling was as follows on January 1 : Work in Process-Filling Department is inn ...nitm onor anmalntad. The following costs were charged to Work in Process-Filling during January: During January, 30,700 units of specialty chemicals were completed. Work in Process-Filling Department on January 31 was 2,700 units, 50% completed. Required: (1) (2) ChangeindirectmaterialscostperequivalentunitChangeinconversioncostperequivalentunitIncreaseorDecrease 4. Discuss the uses of the cost of production report and the results of part (3). The cost of production report may be used as the basis for allocating product costs between. and differences in unit product costs from one month to another, such as those in part (3), can be studied carefully and any significant differences investigated