HL · 2022年05月30日
NO.PZ2018062003000206
问题如下：
Assume that the exchange rate between CAD and USD has decreased to 1.5800. If the USD has depreciated by 5% against the price currency, which of the initial exchange rate is the most accurate between CAD and USD?
选项：
A.1.5048.
B.1.6632.
C.0.6646.
解释：
B is correct.
1.5800/initial rate = 1-0.05
initial rate=1.58/0.95 = 1.6632.
考点： Percentage Change in A Currency
解析:
1.5800/初始汇率= 1-0.05
初始汇率=1.58/0.95 = 1.6632.
货币贬值不是汇率升高吗？
笛子_品职助教 · 2022年05月31日
嗨，从没放弃的小努力你好：
感谢详细讲解，但是还有些疑问： 既然是在原汇率基础上贬值的，为什么是原汇率S=现汇率F/0.95，而不是S=F*1.05呢？
汇率确实难以理解，我先用股票举例。
一个股票，今天是9.5元，相比昨天，跌了5%，问昨天的股票价格是多少钱。
与这道题类似，汇率现在是1.58，相比之前的汇率，跌了5%，问之前的汇率是多少钱。
那么先看股票。
我们假设，昨天股票价格是X
列出方程，9.5/X -1 = -5%
解方程：9.5/X = -0.05+1
9.5/X = 0.95
X = 9.5/0.95=10
本题同理，1.5800/initial rate -1 = -0.05
initial rate=1.58/0.95 = 1.6632.
----------------------------------------------就算太阳没有迎着我们而来，我们正在朝着它而去，加油！
笛子_品职助教 · 2022年05月31日
嗨，从没放弃的小努力你好：
这里涉及的知识点是基础货币和计价货币。
基础货币可以看成商品，例如，每个苹果人民币1.58元，表示为，1.58元/苹果。/表示per，每一个的意思。
如果是货币表达式，CAD/USD=1.58，每个美元值1.58个加元，美元就是基础货币，加元是计价货币。
本题说，If the USD has depreciated by 5% against the price currency。
意思是，美元贬值5%后，CAD/USD=1.58。原来的汇率（initial rate）比现在的汇率高。
如果除以1.05，原来的汇率就比现在的低了，不符合题意。
----------------------------------------------努力的时光都是限量版，加油！
NO.PZ2018062003000206 问题如下 Assume ththe exchange rate between CanUShcreaseto 1.5800. If the UShpreciate5% against the pricurrency, whiof the initiexchange rate is the most accurate between CanUS A.1.5048. B.1.6632. C.0.6646. B is correct.1.5800/initirate = 1-0.05initirate=1.58/0.95 = 1.6632.考点 Percentage Change in A Currency解析:1.5800/初始汇率= 1-0.05初始汇率=1.58/0.95 = 1.6632. 请问下列步骤错在哪里？已知spot rate 1.58 CAUS得spot rate 1/1.58 USC即 0.6239 USCA题UShpreciate5%所以previously 0.6239/0.95 = 0.6662 USC即 1.5011 CAUSD
NO.PZ2018062003000206问题如下 Assume ththe exchange rate between CanUShcreaseto 1.5800. If the UShpreciate5% against the pricurrency, whiof the initiexchange rate is the most accurate between CanUSA.1.5048.B.1.6632.C.0.6646.B is correct.1.5800/initirate = 1-0.05initirate=1.58/0.95 = 1.6632.考点 Percentage Change in A Currency解析:1.5800/初始汇率= 1-0.05初始汇率=1.58/0.95 = 1.6632.所以这个题目是已知现在的利率求原来的利率对吗？
NO.PZ2018062003000206 问题如下 Assume ththe exchange rate between CanUShcreaseto 1.5800. If the UShpreciate5% against the pricurrency, whiof the initiexchange rate is the most accurate between CanUS A.1.5048. B.1.6632. C.0.6646. B is correct.1.5800/initirate = 1-0.05initirate=1.58/0.95 = 1.6632.考点 Percentage Change in A Currency解析:1.5800/初始汇率= 1-0.05初始汇率=1.58/0.95 = 1.6632. Assume ththe exchange rate between CanUShcreaseto 1.5800. 这里的exchange rate是谁比谁？如何判断出来的？
NO.PZ2018062003000206 问题如下 Assume ththe exchange rate between CanUShcreaseto 1.5800. If the UShpreciate5% against the pricurrency, whiof the initiexchange rate is the most accurate between CanUS A.1.5048. B.1.6632. C.0.6646. B is correct.1.5800/initirate = 1-0.05initirate=1.58/0.95 = 1.6632.考点 Percentage Change in A Currency解析:1.5800/初始汇率= 1-0.05初始汇率=1.58/0.95 = 1.6632. 现在CAUS1.58，所以CA1.58USUS值了，所以 0.95×原来的USUS入就要CA1.58US1.58* 0.95×原来的US1.501原来的US到CA原来的US1.501，选A。。。。
