## Math Problem Statement

- Country X and Country Y have the same level of output per worker. They also have the same values for the rate of depreciation, 3, and the measure of productivity, A. In Country X output per worker is growing, whereas in Country Y, it is falling. What can you say about the two countries rates of investment?

## Solution

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## Math Problem Analysis

### Mathematical Concepts

Economic Growth Theory

Solow-Swan Model

Capital Accumulation

### Formulas

Output per worker: Y/L = A * f(K/L)

Capital Accumulation: ΔK = sY - δK

### Theorems

Solow-Swan Growth Model

### Suitable Grade Level

Undergraduate (Economics)

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