Answer:
Activity rate = $176 Â per hour
Explanation:
Activity-based costing is a form of absorption costing where overheads are charged to product using cost drivers. Â
Under this method, overheads are first analyzed and categorized by the activities responsible for them and then charged to product based on the amount of benefits enjoyed using cost drivers. Â
Activity rate per driver is calculated as: Â
Activity overhead for the period / Total cost drivers for the period  Designing products activity cost pool= designing cost /product design hours
    = $1372,448/7,798 hours
    = $176  per hour