Exercise 2-3 Computing Total Job Costs and Unit Product Costs Using a Plantwide Predetermined Overhead Rate (LO2-3) Exercise 2-4 Computing Total Job Costs and Unit Product Costs Using Multiple Predetermined Overhead Rates (LO2-4) Exercise 2-3 Computing Total Job Costs and Unit Product Costs Using a Plantwide Predetermined Overhead Rate (LO2-3) Exercise 2-4 Computing Total Job Costs and Unit Product Costs Using Multiple Predetermined Overhead Rates (LO2-4)