Precision Manufacturing Incorporated $($PMI$)$ makes two types of industrial component parts$-$the EX$300$ and the TX$500.$ It annually

produces $63,000$ units of EX$300$ and $12,800$ units of TX$500.$ 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.

$1-$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.