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在日常生活中，我们每个人都要与银行打交道．比如，某人存入银行现金１００元，年利率为１０％（按单利计），经过３年后一次性取出本利和为１３０元．此处的１３０元是如何计算出来的？后面将详细介绍．首先介绍几个基本概念：在上例中，１００元叫本金，指存款帐户上现有的
In daily life, we each have to deal with banks. For example, someone deposits 100 yuan in bank cash at an annual interest rate of 10% (on a single interest basis). After three years, the interest is taken out at a cost of 130 yuan. How is the 130 yuan here calculated? Will be described in detail later. First introduce a few basic concepts: In the above example, 100 yuan is called the principal, which refers to the existing deposit account