二十分比四分之一时的比值是多少

每当我们遇到数学问题时，我们往往需要运用一些基本的数学概念和技巧来解决它们。今天，让我们来思考一个有关比例的问题：二十分比四分之一时的比值是多少？

首先，让我们明确一下什么是比例。比例是指两个或多个量之间的关系，通常以数字表示。在这个问题中，我们有两个量：二十分和四分之一。而我们要找出的是这两者之间的比值。

为了计算这个比值，我们首先需要将二十分和四分之一转化为相同的单位。由于二十分可以写成20/100，而四分之一可以写成1/4，我们可以利用基本的数学运算将二十分转化为四分之一的形式。

现在，我们将20/100除以1/4。我们可以把除法转化为乘法，即将被除数乘以倒数。所以，我们将20/100乘以4/1得到80/100。简化这个比例得到4/5。

因此，当二十分比四分之一时，其比值为4:5。

In mathematics, when we encounter a problem, we often need to apply some basic mathematical concepts and techniques to solve them. Today, let's think about a problem related to ratios: what is the ratio when twenty parts compared to one-fourth?

Firstly, let's clarify what a ratio is. A ratio refers to the relationship between two or more quantities, usually represented by numbers. In this problem, we have two quantities: twenty parts and one-fourth. And we want to find the ratio between them.

To calculate this ratio, we first need to convert twenty parts and one-fourth into the same unit. Since twenty parts can be written as 20/100, and one-fourth can be written as 1/4, we can use basic mathematical operations to transform twenty parts into the form of one-fourth.

Now, let's divide 20/100 by 1/4. We can convert division into multiplication by multiplying the dividend by the reciprocal of the divisor. So, we multiply 20/100 by 4/1 and get 80/100. Simplifying this ratio, we obtain 4/5.

Therefore, when twenty parts compared to one-fourth, the ratio is 4:5.