b) A company estimates that 64,000 direct labor hours will be worked and 80,000 machine hours will be incurred during the year. In addition, the company has developed the following cost estimates for next year: Page 10 of 19 Indirect materials $40,000 - What are that manufacturing overhead costs that include only indirect product costs? (5 Marks - If overhead is applied on the basis of direct labor hours, what is the company's predetermined overhead rate