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 producing and selling 4,510 cell phones are as follows: Voice Com desires a profit equal to a 14% return on invested assets of $600,400. a. Determine the amount of desired profit from the production and sale of 4,510 cellphones. b. Determine the product cost per unit for the production of 4,510 cell phones. Round your answer to the nearest whole dollar. 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