10:01 (1.5X)
不是很理解答案:Incorrect because there are no diminishing marginal returns to capital for the economy as a whole in the endogenous growth models and saving and investment decisions can generate self-sustaining growth at a permanently higher rate. With saving rate high but long-term potential real GDP growth rate low, Country Y cannot have a high marginal product of capital.
而且X和Y两国在marginal product of capital,LT real GDP growth 等指标上都相同,不知道在选择这道题的时候,X和Y的区别在哪儿