1. Aztec Builders allocates manufacturing overhead to jobs based on machine hours. The company has the following estimated costs for the upcoming year: Direct materials used $25,000 Direct labour costs $62,000 Salary of factory supervisor $49,000 Advertising expense $33,000 Heating and lighting costs for factory $11,000 Depreciation on factory equipment $19,200 Sales commissions $8,000 The firm estimates that 1,800 direct labour hours will be worked in the upcoming year, while 2,200 machine hours will be used during the year. The predetermined indirect allocation rate per machine hour is closest to a. $56. b. $36. c. $100. d. $45. c. $40