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Marine, Incorporated, manufactures a product that is available in both a flexible and a rigid model. The company has made the rigid model for years; the flexible model was introduced several years ago to tap a new segment of the market. Since introduction of the flexible model, the company's profits have steadily declined, and management has become concerned about the accuracy of its costing system. Sales of the flexible model have been increasing rapidly. Overhead is applied to products on the basis of direct labor-hours. At the beginning of the current year, management estimated that $486,000 in overhead costs would be incurred and the company would produce and sell 2,500 units of the flexible model and 8,500 units of the regular model. The flexible model requires 2.0 hours of direct labortime per unit, and the regular model requires 1.00 hours. Direct materials and labor costs per unit are given below: Required: 1-a. Compute the predetermined overhead rate using direct labor-hours as the basis for allocating overhead-costs to products: 1-b. Compute the unit product cost for one unit of each model. 2. An intern suggested that the company use activity-based costing to cost its products. A team was formed to investigate thisidea. It came back with the recommendation that four activity cost pools be used. These cost pools and their-associated activities-are listed-as follows: Compute the activity rate for each of the activity cost paols. 3-a. Using activity-based costing, determine the total amount of overhead that wold be assignech to each model for-theyear. 3-b. Using activity-based costing, compute the unit product cost for one unit of each model. Complete this question by entering your answers in the tabs below. Compute the predetermined overhead rate using direct labor hours as the basis for allocating overhead costs to products