Washtenaw Corporation uses a job-order costing system. The following data are for last year: Estimated Direct Labor Hours 14,000 Estimated Machine Hours 12,000 Estimated Manufacturing Overhead Cost $42,600 Actual Direct Labor Hours 11,000 Actual Machine Hours 13,000 Actual Manufacturing Overhead Cost $39,000 Washtenaw applies overhead using a predetermined rate based on direct labor-hours. What predetermined overhead rate was used last year