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Discussion Questions 3. 'Both a job order costing svstem and a process costing system enable the calculation ofthe unit cost of a product. However, process costing provides a more accurate unit cost'. Discuss 5. 'With process costing, the need to distinguish between direct and indirect materials and labour is not as important as in a job order costing svstem'. Discuss E. 'It is difcult to understand how costs can be assigned to equivalent units when such units do not reallv exist in a phvsical form'. Discuss