NO.PZ2023010401000156
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：
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.
中文解析：
基准货币的升值百分比可以通过将升值的汇率除以初始汇率来计算。在这种情况下，未知的是初始汇率。初始交换是满足公式的X值:
1.4500/ x = 1.08
求解X得到1.45/1.08 = 1.3426
老师这道题能不能再解析一下？用到了什么公式呢？
