Product Cost Concept of Product Costing Voice Com Inc. uses the product cost concept of applying the cost-plus approach to product pricing. The costs of producing and selling 4,620 cellular phones are as follows: Variable costs: Fixed costs: Direct materials $89 per unit Factory overhead $201,000 Direct labor 36 Selling and administrative expenses 68,600 Factory overhead 28 Selling and administrative expenses 18 Total $171 per unit Voice Com wants a profit equal to a 14% rate of return on invested assets of $599,500. a. Determine the amount of desired profit from the production and sale of 4,620 cellular phones. $ b. Determine the product cost and the cost amount per unit for the production of 4,620 cellular phones. If required, round your answer to nearest dollar. per unit c. Determine the product cost markup percentage (rounded to two decimal places) for cellular phones. % d. Determine the selling price of cellular phones. Round to the nearest dollar. Cost per unit Markup Selling price per unit