Suppose an economy has four sectors, Agriculture (A), En- ergy (E), Manufacturing (M), and Transportation (T). Sector A sells 10% of its output to E and 25% to M and retains the rest. Sector E sells 30% of its output to A, 35% to M, and 25% to T and retains the rest. Sector M sells 30% of its output to A, 15% to E, and 40% to T and retains the rest. Sector T sells 20% of its output to A, 10% to E, and 30% to M and retains the rest. a. Construct the exchange table for this economy. b. [M] Find a set of equilibrium prices for the economy.

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EBK Linear Algebra and it's applications section 1.6 is missing expert answers to questions 3E and 4E. I've attached them as images. I was hoping these could be added as I'm stuck on 3E and I need to check 4E who's answer is not in the textbook. Thank you.

**Economic Sectors and Inter-Sectoral Exchanges**

In this problem, we consider an economy that comprises four distinct sectors: Agriculture (A), Energy (E), Manufacturing (M), and Transportation (T). Here's a detailed look into how each sector allocates its output to the other sectors:

- **Sector A (Agriculture):**
  - Sells 10% of its output to Sector E (Energy).
  - Sells 25% of its output to Sector M (Manufacturing).
  - Retains the remaining 65% of its output.

- **Sector E (Energy):**
  - Sells 30% of its output to Sector A (Agriculture).
  - Sells 35% of its output to Sector M (Manufacturing).
  - Sells 25% of its output to Sector T (Transportation).
  - Retains the remaining 10% of its output.

- **Sector M (Manufacturing):**
  - Sells 30% of its output to Sector A (Agriculture).
  - Sells 15% of its output to Sector E (Energy).
  - Sells 40% of its output to Sector T (Transportation).
  - Retains the remaining 15% of its output.

- **Sector T (Transportation):**
  - Sells 20% of its output to Sector A (Agriculture).
  - Sells 10% of its output to Sector E (Energy).
  - Sells 30% of its output to Sector M (Manufacturing).
  - Retains the remaining 40% of its output.

**Tasks:**
1. **Construct the Exchange Table:**
   - You are asked to construct an exchange table that summarizes the percentage of output each sector sells to every other sector. 

2. **Find Equilibrium Prices:**
   - Find a set of equilibrium prices for the economy based on the given inter-sectoral trade percentages.

This structured economy model helps in understanding the flow of resources and outputs between different sectors, enabling the analysis of interdependencies and economic equilibrium.
Transcribed Image Text:**Economic Sectors and Inter-Sectoral Exchanges** In this problem, we consider an economy that comprises four distinct sectors: Agriculture (A), Energy (E), Manufacturing (M), and Transportation (T). Here's a detailed look into how each sector allocates its output to the other sectors: - **Sector A (Agriculture):** - Sells 10% of its output to Sector E (Energy). - Sells 25% of its output to Sector M (Manufacturing). - Retains the remaining 65% of its output. - **Sector E (Energy):** - Sells 30% of its output to Sector A (Agriculture). - Sells 35% of its output to Sector M (Manufacturing). - Sells 25% of its output to Sector T (Transportation). - Retains the remaining 10% of its output. - **Sector M (Manufacturing):** - Sells 30% of its output to Sector A (Agriculture). - Sells 15% of its output to Sector E (Energy). - Sells 40% of its output to Sector T (Transportation). - Retains the remaining 15% of its output. - **Sector T (Transportation):** - Sells 20% of its output to Sector A (Agriculture). - Sells 10% of its output to Sector E (Energy). - Sells 30% of its output to Sector M (Manufacturing). - Retains the remaining 40% of its output. **Tasks:** 1. **Construct the Exchange Table:** - You are asked to construct an exchange table that summarizes the percentage of output each sector sells to every other sector. 2. **Find Equilibrium Prices:** - Find a set of equilibrium prices for the economy based on the given inter-sectoral trade percentages. This structured economy model helps in understanding the flow of resources and outputs between different sectors, enabling the analysis of interdependencies and economic equilibrium.
### Economic Analysis: Three-Sector Model

#### Problem Overview

Consider an economy with three sectors: Chemicals & Metals, Fuels & Power, and Machinery. The inter-sector trading relationships are as follows:

1. **Chemicals**:
   - Sells 30% of its output to Fuels
   - Sells 50% of its output to Machinery
   - Retains the remaining 20%

2. **Fuels**:
   - Sells 80% of its output to Chemicals
   - Sells 10% of its output to Machinery
   - Retains the remaining 10%

3. **Machinery**:
   - Sells 40% of its output to Chemicals
   - Sells 40% of its output to Fuels
   - Retains the remaining 20%

The tasks are:

a. **Construct the Exchange Table**: This involves creating a matrix that shows the proportional outputs traded among the sectors and retained by each sector.

b. **Develop a System of Equations and Augmented Matrix**:
   - Formulate equations ensuring that each sector's total income matches its total expenses.
   - Convert these equations into an augmented matrix suitable for row-reduction.

c. **Determine Equilibrium Prices**:
   - Calculate the equilibrium prices assuming that the price for the Machinery output is set to 100 units.

#### Detailed Analysis

##### a. Construct the Exchange Table

The exchange table shows the proportion of output each sector sells to other sectors and retains. 

| Sector     | Chemicals | Fuels | Machinery | Retained |
|------------|-----------|-------|-----------|----------|
| Chemicals  | 0%        | 30%   | 50%       | 20%      |
| Fuels      | 80%       | 0%    | 10%       | 10%      |
| Machinery  | 40%       | 40%   | 0%        | 20%      |

##### b. System of Equations and Augmented Matrix

To ensure that each sector’s income matches its expenses, the equations can be set up as follows:

Let \( P_C \), \( P_F \), and \( P_M \) be the prices for outputs from Chemicals, Fuels, and Machinery, respectively.

For Chemicals:
\[ P_C = 0.3P_F + 0.5P_M + 0.2P_C \
Transcribed Image Text:### Economic Analysis: Three-Sector Model #### Problem Overview Consider an economy with three sectors: Chemicals & Metals, Fuels & Power, and Machinery. The inter-sector trading relationships are as follows: 1. **Chemicals**: - Sells 30% of its output to Fuels - Sells 50% of its output to Machinery - Retains the remaining 20% 2. **Fuels**: - Sells 80% of its output to Chemicals - Sells 10% of its output to Machinery - Retains the remaining 10% 3. **Machinery**: - Sells 40% of its output to Chemicals - Sells 40% of its output to Fuels - Retains the remaining 20% The tasks are: a. **Construct the Exchange Table**: This involves creating a matrix that shows the proportional outputs traded among the sectors and retained by each sector. b. **Develop a System of Equations and Augmented Matrix**: - Formulate equations ensuring that each sector's total income matches its total expenses. - Convert these equations into an augmented matrix suitable for row-reduction. c. **Determine Equilibrium Prices**: - Calculate the equilibrium prices assuming that the price for the Machinery output is set to 100 units. #### Detailed Analysis ##### a. Construct the Exchange Table The exchange table shows the proportion of output each sector sells to other sectors and retains. | Sector | Chemicals | Fuels | Machinery | Retained | |------------|-----------|-------|-----------|----------| | Chemicals | 0% | 30% | 50% | 20% | | Fuels | 80% | 0% | 10% | 10% | | Machinery | 40% | 40% | 0% | 20% | ##### b. System of Equations and Augmented Matrix To ensure that each sector’s income matches its expenses, the equations can be set up as follows: Let \( P_C \), \( P_F \), and \( P_M \) be the prices for outputs from Chemicals, Fuels, and Machinery, respectively. For Chemicals: \[ P_C = 0.3P_F + 0.5P_M + 0.2P_C \
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