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Application Of Percentage in Maths with Practical Examples

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Real Life Applications of Percentage with Formula and Solved Problems

The percentage formula is used to determine the quantity or percentage of anything in terms of 100. Percent simply means one in a hundred. A number between 0 and 1 may be expressed using the percentage formula.


As in 0.6%, 0.25%, etc., percentages can also be expressed as decimals or fractions. For every topic, academic grades are calculated using percentages. Ram, as an illustration, scored a 78% on his final test. This percentage is determined using Ram's overall cumulative grade point average (GPA).


We are going to learn more about the percentage in the further upcoming article.


Percentage


Percentage


Example of Percentage

Percentages haven't any dimension. Hence it's called a dimensionless number. If we say, \[50\% \]of variety , then it means 50 percent of its whole.


The most common example of percentage is your academic marks calculated in percentage. Like a student Ram has scored \[85\% \] in maths or we can say \[65\% \]in total. So the percentage calculated on the basics of marks obtained from the subject by the Ram.


Examples of percentages are:


Here are some percentages that are written in fraction. This will give you an idea about the fraction and the percentage.


\[10\% \]is adequate to \[\frac{1}{{10}}\] fraction

\[20\% \]is like \[\frac{1}{5}\] fraction

\[25\% \]is like \[\frac{1}{4}\] fraction

\[50\% \]is like \[\frac{1}{2}\] fraction

\[75\% \]is like \[\frac{3}{4}\] fraction

\[90\% \]is like \[\frac{9}{{10}}\] fraction


Application of Percentage

Percentage is application in all terms and everywhere like

  • Bank

  • Schools

  • Office

  • Census etc. It is a very common and well used term in every part of the situation and area.


Real Life Application of Percentage

In real life percentage is used in many places like

  • The bank gives some interest on the basics of percentage like \[2.5\% ,\].

  • The marks we obtained in the subject are also given in percentage etc.


All Formula of Percentage and its Application

Given are the formula of percentage that will help you to calculate the percentage.


Percentage Formula

To calculate the percentage we have to divide the value with total value and then multiply the same by 100.


Percentage formula = (Value/Total value) × 100

Example: \[\frac{5}{{10}} \times 100 = 50\] per cent

Hence, The Percentage is 50%


Chart Of Percentage

We can just go through the given chart to know the percentage of some basic fraction

Fractions

Percentage

\[\frac{1}{2}\]

50%

\[\frac{1}{3}\]

33.33%

\[\frac{1}{4}\]

25%

\[\frac{1}{5}\]

20%

\[\frac{1}{6}\]

16.66%

\[\frac{1}{7}\]

14.28%

\[\frac{1}{8}\]

12.5%


Application of Percentage

Example

1. If \[16\% \] of \[40\% \] of variety is \[8\], then find the amount .

Solution:

Let X be the specified number.

Therefore, as per the given question,

\[\frac{{16}}{{100}} \times \frac{{40}}{{100}} \times x = 8\]

So, \[x = \frac{{8 \times 100 \times 100}}{{16 \times 40}}\]

\[x = 125\]

Hence, The amount is 125.


2. What percentage of \[\frac{2}{7}\] is \[\frac{1}{{35}}\] ?

Solution:

Let X% of \[\frac{2}{7}\] is \[\frac{1}{{35}}\].

\[\therefore \left[ {\frac{{\frac{2}{7}}}{{100}}} \right] \times x = \frac{1}{{35}}\]

\[ \Rightarrow x = \frac{1}{{35}} \times \frac{7}{2} \times 100\]

\[ \Rightarrow 10\% \]

Hence, The Percentage is 10%.


Solved Questions

1. Which number is \[40\% \] less of \[90\]?

Required number \[ = {\rm{ }}60\% \]of 90

\[ \Rightarrow \frac{{90 \times 60}}{{100}}\]

\[ \Rightarrow 54\]

Therefore, the amount 54 is 40% less than 90.


2. A fruit seller had some oranges. He sells \[40\% \]oranges and still has \[420\] oranges. Originally, he had what number of oranges he has?

Let he had N oranges, originally.

Now, as per the given question, we have;

\[\left( {100{\rm{ }}-{\rm{ }}40} \right)\% {\rm{ }}of{\rm{ }}N{\rm{ }} = {\rm{ }}420\]

\[ \Rightarrow \frac{{60}}{{100}} \times N = 420\]

\[ \Rightarrow N = \frac{{420 \times 100}}{{60}} = 700\]

Hence, The total number of Oranges in 700.


Summary

In this article, we have studied the term "percentage." It is nothing but a single percentage, which tells how much that value covers the entire part. The most typical usage of percentage change in finance is to display a security's price change. Percentage change refers to the degree of change over time. The application of Percentage pdf can be downloaded online. A percentage change can be used to express any quantity that can be measured over time. We have also solved some examples and answered questions to better understand the topic.

FAQs on Application Of Percentage in Maths with Practical Examples

1. What is percentage in Maths?

A percentage is a number expressed as a fraction of 100. It is written using the symbol % and shows how many parts out of 100.

  • For example, 45% means 45 out of 100.
  • It can be written as a fraction: 45/100.
  • It can also be written as a decimal: 0.45.
Percentages are widely used in profit and loss, discounts, interest, and data comparison.

2. What is the formula to calculate percentage?

The basic percentage formula is (Part ÷ Whole) × 100.

  • Step 1: Divide the given part by the total whole.
  • Step 2: Multiply the result by 100.
Example: If 25 students out of 50 passed, percentage = (25 ÷ 50) × 100 = 50%.

3. How do you convert a fraction into a percentage?

To convert a fraction into a percentage, multiply the fraction by 100.

  • Formula: Fraction × 100%
  • Example: 3/4 × 100 = 75%
So, 3/4 = 75%. This method works for all proper and improper fractions.

4. How do you convert a decimal into a percentage?

To convert a decimal to a percentage, multiply the decimal by 100 and add the % symbol.

  • Example: 0.85 × 100 = 85%
  • Example: 0.07 × 100 = 7%
Thus, 0.85 = 85%. This is commonly used in marks, interest rates, and statistics.

5. How do you calculate percentage increase?

The formula for percentage increase is ((New Value − Original Value) ÷ Original Value) × 100.

  • Step 1: Find the increase.
  • Step 2: Divide by the original value.
  • Step 3: Multiply by 100.
Example: Price rises from 200 to 250. Increase = 50. Percentage increase = (50 ÷ 200) × 100 = 25%.

6. How do you calculate percentage decrease?

The formula for percentage decrease is ((Original Value − New Value) ÷ Original Value) × 100.

  • Step 1: Find the decrease.
  • Step 2: Divide by the original value.
  • Step 3: Multiply by 100.
Example: Value drops from 500 to 400. Decrease = 100. Percentage decrease = (100 ÷ 500) × 100 = 20%.

7. What is the formula for finding the original value from percentage?

The original value can be found using the formula: Original Value = (Final Value × 100) ÷ Percentage.

  • Example: If 60 is 75% of a number,
  • Original Value = (60 × 100) ÷ 75 = 80.
So, the original number is 80. This method is useful in reverse percentage problems.

8. How do you find what percentage one number is of another?

To find what percentage one number is of another, use (First Number ÷ Second Number) × 100.

  • Example: What percentage is 30 of 120?
  • (30 ÷ 120) × 100 = 25%
Therefore, 30 is 25% of 120. This concept is common in exam scores and comparisons.

9. How is percentage used in real life?

Percentage is used to express proportions in daily life situations such as discounts, profit, tax, and interest.

  • Discounts: 20% off on products
  • Interest rates: 5% per annum
  • Exam results: 88% marks
  • Profit and loss calculations
Percentages help compare quantities easily because they are always based on 100.

10. What are common mistakes to avoid in percentage problems?

The most common mistake in percentage problems is using the wrong base value for calculation.

  • Confusing original value with final value
  • Forgetting to multiply or divide by 100
  • Mixing up percentage increase and decrease formulas
  • Not converting percentages to decimals correctly (e.g., 20% = 0.20)
Always identify the base (whole) clearly before applying the percentage formula.