Precision Manufacturing Incorporated (PMI) makes two types of industrial component parts - the EX300 and the TX500. It annually produces 70,000 units of EX300 and 13,500 units of TX500. The company's conventional cost system allocates manufacturing overhead to products using a plantwide overhead rate and direct labor dollars as the allocation base. Additional information relating to the company's two product lines is shown below: The company is considering implementing an activity-based costing system that distributes all of its manufacturing overhead to four activities as shown below: Required: 1-a. Compute the plantwide overhead rate that would be used in the company's conventional cost system. i-b. Using the plantwide rate, compute the unit product cost for each product. 2-a. Compute the activity rate for each activity cost pool. 2-b. Using the activity rates, compute the unit product cost for each product