Problem 2-21 Plantwide Versus Multiple Predetermined Overhead Rates [LO2-1, LO2-2] Mason Company has two manufacturing departments-Machg and Assembly. The company considers all of its manufacturing overhead costs to be fixed costs. It provided the following estimates at the beginning of the year as well as the following information with respect to Jobs A andB Estimated Data Manufacturing overhead Direct labor hours Machine hours Machining Assembly Total $10,944,00e s 24,000 456,000 $ 576,000 $11,520,000 456,000 19,000 480,000 475,000 Job A Direct labor hours Machine hours Machining Assembly Total 10 15 13 Machining Assembly Total Job B Direct labor hours Machine hours 4 12 15