The purpose of this case study is to show how the traditional costing and activitybased
costing approaches can give greatly differing results in terms of the best product
mix and capacity constraints of a company. To demonstrate this difference between the
two approaches, two mathematical models can be used to determine the optimal product
mix of a company by using first the traditional costing method and then the activity-based
costing based on an evaluation of the data derived from a hypothetical company. The
XYZ Company has three main products, P1, P2, and P3. The current selling price, the
monthly demands, the batch sizes, the material cost, and the direct labor cost information
for each product are given in Table 4.1.