Learn How to Count Percentage

Introduction to learn how to count percentage

In mathematics, a percentage is a way of expressing a number as a fraction of 100 (per cent meaning "per hundred" in French). It is often denoted using the percent sign, "%", or the abbreviation "pct". For example, 45% (read as "forty-five percent") is equal to 45 / 100, or 0.45. Counting percentage means the process of expressing the value of a number in 100. (Source: From Wikipedia).

Here we are going to learn how to count percentage.

Please express your views of this topic Find a Percentage by commenting on blog.

Example problems to learn counting percentage

Here we will learn some example problems to count percentage.

Example 1

Write the fraction `30/100` as a percentage

Solution

Here 30 is expressed as a fraction of 100. To write `30/100` as a percent we have to multiply `30/100` by 100.

We, get `30/100` * 100 = 30

So, 30/100 is equal to 30 percentage or 30%

Example 2

Count the percent of 30 in 80

Solution

Here we have to count the percent of 30 in 80.

Let x be the percentage,

So, `30/80` = `x/100`

x = `30/80` * 100

x = `300/8`

x = 37.5

So, 30 is 37.5 percent of 80

Example 3

What is 30 percent of 20.

Solution

Here we have to find the value of 30 percent in 20

Let the number be x

So, `x/20` = `30/100`

x = `30/100` * 20

x = `600/100`

x = 6

So, 30 percent of 20 is 6.


Few more examples to learn counting percentage

Here we will learn few more problems to count percentage.

Example 1: Write the decimal 0.25 as fraction

Solution

0.25 can be written as 25/100 in fraction

To convert this fraction into percentage we have to multiply the fraction by 100

Doing so, `25/100` * 100 = 25

So, 0.25 is 25 percent.

Example 2: Write the proportion 32:100 as a percent

Solution

The proportion 32:100 can be written as `32/100` in fractional form.

Now, `32/100` can be written as `32/100` * 100 = 32 percent

So, 32:100 is equal to 32 percent.

Example 3: 25 is 4 percent of what number.

Solution

Let the number be x

So, `25/x` = `4/100`

This equation can be written as, x = `25/4` * 100

x = 25 * 25

x = 625

So, 25 is 4 percent of 625.