Redfern Audio produces audio equipment including headphones. At the Campus Facility, it produces two wireless models, Standard and Enhanced, which differ both in the materials and components used and in the labor skill required. Data for the Campus Plant for the third quarter follow. Units produced Machine-hours Standard 28,200 Enhanced 9,400 Total 37,600 16,920 11,280 28,200 Direct labor-hours 21,150 21,150. 42,300 Direct materials costs Direct labor costs $ 564,000 338,400 $ 846,000 $1,410,000 719,100 1,057,500 778,320 Manufacturing overhead Total costa Required: $ 3,245,820 Compute the predetermined overhead rate assuming that Redfern Audio uses machine-hours to allocate overhead costs. Note: Round your answer to 2 decimal places. Predetermined overhead rate per machine-hour