23 杰斐逊（Jefferson）和维克多（Victor）被公司分别派往华盛顿特区和北京工作。杰斐逊在华盛顿特区以 1800 美元（USD）的价格租了一套面积为 696 平方英尺（sq ft）的公寓，而维克多在北京以 8000 人民币（CNY）的价格租了一套面积为 60 m^2 的公寓。已知两地货币汇率为 1 USD = 7.25 CNY 且 1 m^2 = 10.7639 sq ft，请通过清晰的计算过程说明哪套公寓的租金成本更高。 答案

1. Find Jefferson's rental cost per square foot.

For Jefferson,
$\text{cost per sq ft}=\frac{1800}{696}=2.586\ldots\text{ USD/sq ft}$

2. Convert Victor's rent and area into the same units as Jefferson's.

For Victor,
$8000\text{ CNY}=8000\div 7.25=1103.448\ldots\text{ USD}$
$60\text{ m}^2=60\times 10.7639=645.834\text{ sq ft}$

3. Find Victor's rental cost per square foot and compare.

For Victor,
$\text{cost per sq ft}=\frac{1103.448\ldots}{645.834}=1.7085\ldots\text{ USD/sq ft}$
Since $2.586\ldots>1.7085\ldots$, Jefferson's apartment has the higher rental cost per sq ft.