Question

一个圆柱形咖啡机上的玻璃刻度显示，当咖啡达到满容量的 $36\%$ 时还剩 $45$ 杯。咖啡机装满时可以容纳多少杯咖啡？

The glass gauge on a cylindrical coffee maker shows there are $45$ cups left when the coffee maker is $36\%$ full. How many cups of coffee does it hold when it is full?

$80$

$100$

$125$

$130$

$262$

答案：C

知识点：百分数比与比例

难度评级：930

解答：

设满容量为 $n$ 。则 $\dfrac{45}{n} = \dfrac{36}{100}$ 。

解得 $n = \dfrac{45 \times 100}{36} = 125$ 杯。

所以正确答案是 C。

Let $n$ be the full capacity. Then $\dfrac{45}{n} = \dfrac{36}{100}.$

Solving, $n = \dfrac{45 \times 100}{36} = 125$ cups.

Thus, the correct answer is C .

1988 AMC 8 第 20 题

答案：C

难度评级：930

解答：

其他年份的第 20 题