National Inc., manufactures two models of CMD that can be used as cell phones, MPX, and digital camcorders. Model High F Great P Annual Sales in Units 10,100 16,100 02:57:21 National uses a volume-based costing system to apply factory overhead based on direct labor dollars. The unit prime costs of each p Direct materials Direct labor High F $38.10 $17.70 Great P $25.50 $13.30 $ 411,400 Budget factory overhead: Engineering and Design Quality Control Machinery Miscellaneous Overhead Total 2,420 engineering hours 12,850 inspection hours 33,730 machine hours 26,410 direct labor hours 282,700 573,410 132,85e $1,399,560 National's controller had been researching activity-based costing and decided to switch to it. A special study determined National's two pra Engineering and design hours Quality control inspection hours Machine hours Labor hours High F Great P 970 1,450 5,65 7,200 20,290 13,440 12,010 14,400 What is the overhead application rate using the firm's volume-based costing system? (Rounded to the nearest percent or cents.)