Total Cost Concept of Product Pricing Smart Stream Inc. uses the total cost concept of applying the cost-plus approach to product pricing. The costs of producing and selling 9,000 units of cellular phones are as follows: Variable costs: Fixed costs: Direct materials $ 79 per unit Factory overhead $359,600 Direct labor 36 Selling and admin. exp. 126,400 Factory overhead 24 19 Selling and admin. exp. Total $158 per unit Smart Stream wants a profit equal to a 15% rate of return on invested assets of $1,017,600. a. Determine the total costs and the total cost amount per unit for the production and sale of 9,000 units of cellular phones. Round the cost per unit to two decimal places. Total costs $ Cost amount per unit b. Determine the total cost markup percentage (rounded to two decimal places) for cellular phones. % nearest cent. c. Determine the selling price of cellular phones. Round $ per phone