(Leontief1 input-output model) Suppose that three industries are interrelated so that
Chapter 8, Problem 8.1.45(choose chapter or problem)
(Leontief \({ }^{1}\) input-output model) Suppose that three industries are interrelated so that their outputs are used as inputs by themselves, according to the 3 X 3 consumption matrix
\(\mathbf{A}=\left[a_{j k}\right]=\left[\begin{array}{ccc} 0.2 0.5 0 \\ 0.6 0 0.3 \\ 0.2 0.5 0.7\end{array}\right]\)
where \(a_{j k}\) is the fraction of the output of industry k consumed (purchased) by industry j. Let \(p_{j}\) be the price charged by industry j for its total output. A problem is to find prices so that for each industry, total expenditures equal total income. Show that this leads to Ap = p, where \(\mathbf{p}=\left[\begin{array}{lll}p_{1} p_{2} p_{3}\end{array}\right]^{\top}\), and find a solution p with nonnegative \(p_{1}, p_{2}, p_{3}\).
Text Transcription:
^1
A = [a_jk] = [0.2 0.5 0 \\ 0.6 0 0.3 \\ 0.2 0.5 0.7]
a_jk
p_j
p = p_{1} p_{2} p_{3}]^{top}
p_1, p_2, p_3
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