Question: There are two and only two countries in the world: Argentina and Chile. There is perfect free trade between the two. The aggregate investments in

There are two and only two countries in the world: Argentina and Chile. There is perfect free trade between the two. The aggregate investments in Argentina are given by IA and in IC there both are exogenous. The savings are due to the following context:

SA = A + ar,

where A, a > 0 for Argentina and for Chile it is given by SC that is exogenous.

1. Find the equilibrium interest rate.

2. Derive the condition for Argentina to be a net exporter.

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