Stage of Production Sales Value of Materials or Products
Firm A $800
Firm B 1,250
Firm C 1,850
Firm D 2,600
Firm E 3,800
Firm A produces something that Firm B uses as an input. The product of Firm B, in turn, is purchased and used as an input by Firm C, and so on down the line through Firm E, which produces the end product. (See the accompanying table.) The total value added by Firms A-E from the production of the end product described here is