Change in capital per effective worker is written as: K K . L - (g+8 +1) A - L A -L where & is the depreciation rate, g is the 'technological progress' rate, and n is population growth rate.Consider the following aggregate production function (1) for economy X, which exhibits constant returns to scale and diminishing marginal productivity of capital (K) and effective labour (A . L): Y = F(K, A . L) where A stands for the level of technology. The population saving rate for economy X is s