Percentages can be confusing-especially if you’re not sure what they represent. It turns out that calculating percentages is actually quite simple, but it’s best to know the basics before diving in! This post will teach you how to calculate percentages, and also give some examples of how they are used in everyday life. When you understand the concepts behind them, handling percentages will be a breeze. Whether you’re shopping for groceries or looking at your bank account balance on your smartphone, knowing the basics of percentage calculations will make these numbers easier to handle!
What is a percentage
A percentage is a number that represents a portion of a whole. In other words, it’s a way of expressing a particular fraction as a decimal. For example, if you want to calculate the percentage of a number that is greater than zero, you would divide the number by 100. So, if you have a number of $120 and you want to find its percentage increase, you would divide $120 by 100 to get 1.20. This means that the number has increased by 20%.
How to calculate percentages
To calculate percentages, all you need to do is divide the number of items you’re interested in by the total number of items. This will give you the decimal representation of the percentage.
For example, let’s say you have a test with 25 questions. If you answered 20 questions correctly, your percentage score would be 80%. This means that out of the 25 questions on the test, 20 of them were answered correctly-or 80% of them.
Why do you need to know how to calculate percentages
Understanding percentages can be very useful in many aspects of life. For example, you can use them to find discounts or other special offers at many stores. You can also determine how much you should expect your paycheck to change after a raise or other adjustment. Additionally, percentages can be helpful when you’re budgeting or trying to save money. By understanding how your savings account or other investments are performing, you can make better choices about where to put your money.
Types of problems that involve percents, including word problems, probability problems, and sales tax
- Word problems: A word problem is a math problem that uses words to describe a real-world scenario. These problems can be tricky, because you need to be able to understand the wording and then translate it into a mathematical equation.
- Probability problems: Probability problems are questions that ask about the likelihood of something happening. You will need to use probability to solve these problems.
- Sales tax: Sales tax is a percentage that is added onto the cost of an item when you buy it. For example, if a shirt costs $25 and the sales tax is 7%, then you would have to pay $27 in total ($25 + 7% of $25).
15 of what number is 12
12% of what number (x) is 15
= 3/4 or .75
12% of x is 15 means that if you multiply 12% by x, the result will be 15. To solve for this, you would use the formula (x*(.12))/(1+((x*.12)))=15. This will give you the answer of 3/4 or .75.
It can be difficult to know what percentages mean when you come across them in everyday life. It turns out that calculating percentages is actually quite simple, but it’s best to have a general understanding of how they work before diving into the math! In this article, we’ve shown you how to calculate percentages and given some examples of percentage calculations in daily life. Whether you’re shopping for groceries or looking at your bank account balance on your smartphone, knowing the basics behind these concepts will make them a breeze!