Solving for Departmental Overhead Rate o Aztec Industries produces bread which goes through two operations, mixing and baking, before it is ready to be packaged. Next year's expected costs and activities are shown below. Compute Aztec's departmental overhead rate for the mixing department based on direct labor hours. Mixing Baking Direct labor hours 400,000 DLH 80,000 DLH Machine hours 800,000 MH 800,000 MH Overhead costs $600,000 $400,000