3. Harwood Company is a manufacturing firm that operates a job-order costing system. Overhead costs are applied to jobs on the basis of machine-hours. At the beginning of the year, management estimated that the company would incur $168,000 in manufacturing overhead costs and work 60,000 machine-hours. Required: 1. Compute the company's predetermined overhead rate. 9. 2. Assume that during the year the company works only 48,000 machine-hours and incurs the following costs in the manufacturing overhead and work-inprocess accounts. Compute the missing amounts and show the balance in your manufacturing overhead T-account. 10