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Dandy Doors, Inc., produces two types of doors, interior and exterior. The company's simple costing system has two direct-cost categories (materials and labor) and one indirect-cost pool. The simple costing system allocates indirect costs on the basis of machine-hours. Recently, the owners of Dandy Doors have been concerned about a decline in the market share for their interior doors, usually their biggest seller. Information related to Dandy Doors production for the most recent year follows: (Click the icon to view the production data.) (Click the icon to view additional information.) Read the requirements. Requirement 1. Calculate the cost of an interior door and an exterior door under the existing simple costing system. Before calculating the cost of an interior and exterior door, begin by calculating the overhead rate under the simple costing system. First select the formula, then enter the applicable amounts and calculate the rate. (Round your answer to the nearest cent. Abbreviations used: bgt. = budgeted, qty = quantity.) Data table More info The owners have heard of other companies in the industry that are now using an activity-based costing system and are curious how an ABC system would affect their product costing decisions. After analyzing the indirect-cost pool for Dandy Doors, the owners identify six activities as generating indirect costs: production scheduling, material handling, machine setup, assembly, inspection, and marketing. Dandy Doors collected the following data related to the indirect-cost activities: Marketing costs were determined to be 4% of the sales revenue for each type of door. Requirements 1. Calculate the cost of an interior door and an exterior door under the existing simple costing system. 2. Calculate the cost of an interior door and an exterior door under an activity-based costing system. 3. Compare the costs of the doors in requirements 1 and 2. Why do the simple and activity-based costing systems differ in the cost of an interior door and an exterior door? 4. How might Dandy Doors, Inc., use the new cost information from its activity-based costing system to address the declining market share for interior doors