Have you ever wondered what 15% of 64 is? Whether you are calculating the tip at a restaurant or trying to solve a math problem, understanding percentages and their calculations is an important skill. In this ultimate guide, we will explore what 15% of 64 is and how to calculate it, as well as answer some common questions related to percentages.

## What is a percentage?

A percentage is a way of expressing a value in relation to a whole. It is a number or ratio expressed as a fraction of 100. For example, 15% means 15 out of 100.

## How to calculate 15% of 64?

To calculate 15% of 64, you can use the following formula:

Percentage |
Number |
Result |

15% |
64 |
9.6 |

So, 15% of 64 is 9.6.

## How to calculate percentages?

The formula for calculating a percentage is:

Percentage |
Number |
Result |

P% |
x |
(P/100) * x |

Here, P is the percentage that you want to calculate and x is the number you want to calculate the percentage of.

### Example:

What is 20% of 50?

Percentage |
Number |
Result |

20% |
50 |
10 |

So, 20% of 50 is 10.

## How to convert percentages to decimals?

To convert a percentage to a decimal, divide the percentage by 100 or move the decimal point two places to the left. For example:

- 50% = 0.50
- 75% = 0.75
- 10% = 0.10

## How to convert decimals to percentages?

To convert a decimal to a percentage, multiply the decimal by 100 or move the decimal point two places to the right. For example:

- 0.50 = 50%
- 0.75 = 75%
- 0.10 = 10%

## Common Percentages:

Some common percentages that you may encounter are:

- 10%
- 15%
- 20%
- 25%
- 30%
- 40%
- 50%
- 75%
- 100%

## Uses of Percentages:

Percentages are used in various fields, some of which include:

- Finance and Accounting
- Statistics
- Education
- Science
- Business and Marketing

## Mistakes to avoid when calculating percentages:

When calculating percentages, some common mistakes that you should avoid include:

- Not converting a decimal to a percentage before using it in a calculation
- Forgetting to add or subtract the percentage from the original value
- Not double-checking your calculations

## Conclusion:

Knowing how to calculate percentages is an important skill that you can use in various aspects of life. Remember to convert percentages to decimals and vice versa when necessary, and always double-check your calculations to avoid mistakes.

## Common Questions and Answers:

**What is a percentage?**A percentage is a way of expressing a value in relation to a whole. It is a number or ratio expressed as a fraction of 100.**How to calculate 15% of 64?**To calculate 15% of 64, you can use the following formula: 15/100 * 64 = 9.6.**How to convert percentages to decimals?**To convert a percentage to a decimal, divide the percentage by 100 or move the decimal point two places to the left.**How to convert decimals to percentages?**To convert a decimal to a percentage, multiply the decimal by 100 or move the decimal point two places to the right.**What are the common percentages?**Some common percentages include 10%, 20%, 25%, 30%, 40%, 50%, 75%, and 100%.

## References:

1. “Percentage Calculations.” Math Is Fun, https://www.mathsisfun.com/percentage-calculator.html. Accessed 28 Jul. 2021.

2. “Percentage.” Wikipedia, https://en.wikipedia.org/wiki/Percentage. Accessed 28 Jul. 2021.

3. “Percentage Tricks & Shortcuts | Percentage Problems Tricks | Math Tricks.” YouTube, uploaded by Tips and Tricks, 17 Jan. 2018, https://www.youtube.com/watch?v=9OCJKfLbIaE. Accessed 28 Jul. 2021.