Mastery Problem: Activity-Based Costing WoolCorp WoolCorp buys sheep's wool from farmers. The company began operations in January of this year, and is making decisions on product offerings, pricing, and vendors. The company is also examining its method of assigning overhead to products. You've just been hired as a production manager at Wool Corp. Currently WoolCorp makes two products: (1) raw, clean wool to be used as stuffing or insulation and (2) wool yarn for use in the textile industry. The company would like you to evaluate its costing methods for its raw wool and wool yarn. Single Plantwide Rate WoolCorp is currently using the single plantwide factory overhead rate method, which uses a predetermined overhead rate based on an estimated allocation base such as direct labor hours or machine hours. The rate is computed as follows: Single Plantwide Factory Overhead Rate = (Total Budgeted Factory Overhead) (Total Budgeted Plantwide Allocation Base) WoolCorp has been using combing machine hours as its allocation base.