Puzzle Company uses a job order costing system . The company's executives estimated that direct labor would be $55,000 (2,750 hours at \$20/hour) and that estimated factory overhead would be $330,000 for the current period . At the end of the period, actual records show that there had been 2,500 hours of direct labor and $ 290,000 of actual overhead costs. Using estimated direct labor dollars as a base , what was the predetermined overhead rate?