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 10,000 cellutar phones are as follows: Smart Stream desires a proft equal to a 30% rate of return on invested assets of $1,200,000. a. Determine the total costs and the total cost amount per unit for the production and sale of 10,000 cellular phones b. Determine the tot't cost markup percentage (rounded to two decimal places) for cellular phones: c. Determine the selling price of celular phones, Round to the nearest dollat. per phone