Total Cost Method of Product Pricing Simart stream Inc. uses the total cost method of oppiying the cost-plus approach to product pricing. The costs of preducing and sallng 6.000 units of cell phanes are as follows: Smart stream desires a profit cqual to a 15% return on invested ansete of 1816,000 . a. Determine the total costs and the total cost amount per unit for the production and sale of 6,000 cell phones. Round the cost per unit to two decimal places. b. Determine the total cost narkup percentage for cell phones. Round vour answer to two decimal places. W c. Determine the seling price of cell phones. Round to the nearest cent. 5 per cell phone