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marinecat · 2023年08月11日

怎么理解题目中的汇率对

  1. CFA I
  2. Economics Analysis

NO.PZ2016010802000206

问题如下：

An exchange rate between two currencies has increased to 1.4500. If the base currency has appreciated by 8% against the price currency, the initial exchange rate between the two currencies was closest to:

选项：

A.

1.3340.

B.

1.3426.

C.

1.5660.

解释：

B is correct.

The percentage appreciation of the base currency can be calculated by dividing the appreciated exchange rate by the initial exchange rate. In this case, the unknown is the initial exchange rate. The initial exchange is the value of X that satisfies the formula:

1.4500/X = 1.08

Solving for X leads to 1.45/1.08 = 1.3426.

考点： Percentage Change in A Currency

解析:

1.4500/初始汇率= 1.08.

初始汇率= 1.45/1.08 = 1.3426

看了眼答案，为什么默认是1.45A/B，而不是A/B=1.45，这两种表达方式针对base currency算出来的结果完全不一样

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1 个答案

笛子_品职助教 · 2023年08月11日

嗨，努力学习的PZer你好：


Hello，亲爱的同学~

现在的汇率：一个base currency值1.45个price currency

现在的汇率相对原来的汇率，base currency上涨了8%

问原来的汇率是多好。


同学理解上述含义就可以了。


我们假设原来的汇率是X

那么

X*（1+8%）=1.45

X = 1.45/1.08 = 1.3426

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加油吧，让我们一起遇见更好的自己！

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