Smart Stream Inc. uses the total cost method of applying the cost$-$plus approach to product pricing. The costs of producing and selling $7,500$ units of cell

phones are as follows:

Variable costs per unit:

Fixed costs:

Factory overhead

$$321,900$

Selling and administrative expenses $113,100$

Smart Stream desires a profit equal to a $16\%$ return on invested assets of $$948,750.$

a$.$ Determine the total costs and the total cost amount per unit for the production and sale of $7,500$ cell phones. Round the cost per unit to two

decimal places.

Total cost

Total cost amount per unit

b$.$ Determine the total cost markup percentage for cell phones. Round your answer to two decimal places.

$\%$

c$.$ Determine the selling price of cell phones. Round to the nearest cent.

$$,$ per cell phone