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 An input-output model consists of the following flows in dollars, x11 = 10, x12 = 20, 21 = 30, X22 = 10

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 An input-output model consists of the following flows in dollars, x11 = 10, x12 = 20, 21 = 30, X22 = 10. Throughputs are, x1 = 50 and x2 = 40, and emissions of CO2 from sectors 1 and 2 are 50 kg and 100 kg, respectively. Answer the following questions for this system. a. Determine the final demand and value added for each sector. b. Determine the direct requirements matrix. C. For final demands of f1 = 10 and f2 = 10, determine the throughputs.