Radiator Springs Water Co. uses direct-labor hours as their sole overhead cost- allocation base. At the beginning of the year, they estimate manufacturing overhead costs will be $267,000, machine hours will be 35,000, and direct-labor hours will be 42,000 for 2021. At the end of the year, they determined manufacturing overhead was actually $284,000 and actual hours were 39,000 and 37,000 for machines and direct-labor, respectively. If RSW Co. uses normal costing, what was the pre-determined overhead rate for 2021? (round to the nearest cent)