Activity cost pools, activity rates, and product costs using activity-based costing Caldwell Home Appliances Inc. Is estimating the activity cost associated with producing ovens and refrigerators. The indirect labor can be traced into four separate activity pools, based on time records provided by the employees. The budgeted activity cost and activity-base information are provided as follows: The estimated activity-base usage and unit information for two product lines was determined as follows: b. Determine the activity-based cost per unit of each product. Round the per unit rates to the nearest cent. Ovens\$ per unit Refrigerators \$ per unit