12/20 as a percentage
In mathematics, a percentage is a number or ratio that can be expressed as a fraction of 100. To calculate the percentage of a number, divide the number by the whole number and multiply by 100.
For example, to calculate the percentage of 12 out of 20, we would divide 12 by 20 and then multiply by 100.
12 / 20 = 0.6 0.6 * 100 = 60 Therefore, 12/20 is equivalent to 60%.
Questions
- What is the formula for converting a fraction to a percentage?
The formula for converting a fraction to a percentage is as follows:
percentage = fraction * 100 For example, to convert the fraction 1/2 to a percentage, we would use the following formula:
percentage = 1/2 * 100 percentage = 50 Therefore, 1/2 is equivalent to 50%.
- What is the difference between a percentage and a decimal?
A percentage is a number or ratio that can be expressed as a fraction of 100. A decimal is a number that can be expressed as a fraction of 10.
For example, 50% is equivalent to 0.5, which is a decimal.
- How can percentages be used in everyday life?
Percentages are used in a variety of ways in everyday life. For example, they are used to express grades, sales, and discounts.
For example, a student who receives a grade of 80% on a test has scored 80 out of 100 possible points. A store that offers a 20% discount on a product is selling the product for 80% of its original price.
- What are some other common uses of percentages?
Percentages are also used in a variety of other contexts, such as:
- Statistics: Percentages are often used to summarize data in a concise and easy-to-understand way.
- Finance: Percentages are used to calculate interest rates, returns on investments, and inflation.
- Business: Percentages are used to track sales, profits, and market share.
Conclusion
Percentages are a useful tool for expressing numbers and ratios in a concise and easy-to-understand way. They are used in a variety of contexts, including everyday life, statistics, finance, and business.
