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 Direct labor-hours Standard 29,100 17,460 21,825 Enhanced 9,700 11,640 21,825 Total 38,800 29,100 43,650 Direct materials costs Direct labor costs $ 582,000 349,200 $ 873,000 $ 1,455,000 742,050 1,091,250 750,780 Manufacturing overhead Total costs Required: $ 3,297,030 Compute the predetermined overhead rate assuming that Redfern Audio uses direct labor costs to allocate overhead costs. Note: Round your answer to 2 decimal places. Predetermined overhead rate % of direct labor cost