The final result depends on the level of children's upbringing costs, the utility that parents get from the investment in the human capital of children and the return rate of education investment.

少儿抚养人口比例对居民储蓄的净影响取决于少儿的抚养费用水平、父母从对儿童进行人力资本投资行为中得到的效用和教育的投资收益率。

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The internal rate of return represents the true interest rate earned in an investment over its economic life.

内含报酬率是项目在其寿命周期内所实现的真实收益率。

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Four commonly used investment decision methods that generate statistics to compare projects are present worth, annual worth, future worth, and rate of return.

四个通常的产生统计以比较方案的用于投资决策方法是：现值法、年值法、期望值法和回报率法。

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Much like Manhattan apartment brokers who resist putting their best properties on a central listing service, PE firms use performance measurements like multiple of investment or internal rate of return that make it virtually impossible to compare one fund against another unless they started the same time and have had similar cash inflows and outflows.

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Governments are also under tremendous pressure to keep their pension fund rate of return high: the lower the rate of return on investment, the greater the pension obligations become.

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We can analyze this annuity purchase like an investment and calculate an internal rate of return (IRR).

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