Product Cost Method of Product Costing Voice Com, Inc. uses the product cost method of applying the cost-plus approach to product pricing. The costs of produc selling 5,320 cell phones are as follows: Voice Com desires a profit equal to a 14% rate of return on invested assets of $599,700. a. Determine the amount of desired profit from the production and sale of 5,320 cell phones. b. Determine the product cost per unit for the production of 5,320 of cell phones. Round your answer to the nearest wh $ per unit c. Determine the product cost markup percentage for cell phones. Round your answer to two decimal places. % d. Determine the selling price of cell phones. Round your answers to the nearest whole dollar