Graphically illustrate and explain the effects of an increase in the saving rate on the Solow growth model. In your graph, clearly label all curves and equilibria.

What will be an ideal response?

ANSWER:

The graph is easy. The increase in s will cause an increase in S/N and I/N. At the initial K/N, depreciation is less than investment. Alternatively, there is excess investment to offset the amount of capital that wears out. So, the capital stock will increase. This will cause an increase in K/N, Y/N, and S/N. As Y/N rises, so will C/N. This is all shown easily with the graph of the model.