Anthony Kennedy,
Trinova Corporation v. Michigan Department of Treasury…
“ The bakery's costs consist of materials (flour, sugar, spices, utilities) , labor (baker, sales clerk) , capital (building, mixer, utensils, oven) , and credit (interest paid on loans) . Any excess of revenues over costs represents profit. Thus:Revenue = Cost of Labor + Cost of Materials +Because value added is defined as the difference between the value of products sold (revenues) , and the cost of materials going into the products, we can represent value added (for the entire firm) by a second simple equation: Value added = Revenues - Cost of Materials. ”
