如何计算比率？

我们的古代建筑和构造是观察几何方法以及以特定方式使用形状和结构的绝佳例子。术语几何预计将源自希腊语“ge”和“materia”，分别表示地球和测量。

Geometry is the study of shapes, structures and their properties.

现代进步世界的基础设施发展高度依赖几何。它是建筑、设计、施工活动和许多其他领域的基地。除了现场施工外，几何图形在 IT 世界中也有其作用，因为它是计算各种设计、蓝图、编程等技术背景的重要组成部分。

什么是比率？

比率是两个数字的分数表达式，假设 p 和 q 为 p/q，总是以简化形式表示。

另一个定义也可以是两个或多个数字的比较，即一个数字包含另一个数字的次数。

如何计算比率？

回答：

Ratios are the fractions of two numbers expressed in the form of p/q (where p and q are definite real numbers). So, to calculate the ratio we have to divide one data with the other. 

Suppose the given two numbers are 100 and 50. Now to find their ratio we have to divide the number 100 by 50.

That is,

=>100/50 = 2/1 

The ratio of the given two numbers is 2/1 or 2:1.

示例问题

问题 1. 一个教室由 50 个男孩和 30 个女孩组成。男孩和女孩的比例是多少？

解决方案：

Given,

Number of boys = 50

Number of girls = 30

Ratio of boys to girls = 50/30 = 5/3 

The ratio of boys to girls is 5/3 or 5:3.

问题 2. 如果两个补角的比例是 2:3。找到角度。

解决方案：

Let the ratio 2 to 3 be 2x to 3x.

Now, as the angles are supplementary angles

=>2x + 3x = 180°

=>x = 36°

Then,

= 2x = 2×36 = 72°

=> 3x = 3×36 = 108°

The angles are 72° and 108°

问题 3。一个篮子由 16 个橙子和 12 个芒果组成。找出篮子里橙子和芒果的比例。

解决方案：

Given,  

Number of oranges = 16

Number of mangoes = 12

Then,

Ratio of orange to mango = 16/12 = 4/3

Hence, the ratio of orange to mango is 4/3 or 4:3.