If variable manufacturing costs are $10 per unit and total fixed manufacturing costs are $325,000, what is the manufacturing cost per unit if

a. 5,000 units are manufactured and the company uses the variable costing concept? $

b. 6,500 units are manufactured and the company uses the variable costing concept? $

c. 5,000 units are manufactured and the company uses the absorption costing concept? $

d. 6,500 units are manufactured and the company used the absorption costing concept? $