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The Basics of Percentages
Before we dive into the details of what 90 percent of 80 is, let’s review the basics of percentages. A percentage is a way of expressing a fraction or a portion of a whole as a number out of 100. For example, if you have 10 apples and you eat 2 of them, you have consumed 20 percent of the total number of apples.
Understanding What Percent Means
The word “percent” is derived from the Latin phrase “per centum,” which means “by the hundred.” When we say that something is a certain percentage, we are essentially saying that it is that many parts out of 100. For instance, if you have a pizza with eight slices and you eat two slices, you have consumed 25 percent of the pizza.
Calculating 90 Percent of 80
Now, let’s get back to the question at hand: what is 90 percent of 80? To figure this out, we need to know how to convert percentages into decimals. To do this, we simply divide the percentage by 100. For example, to convert 90 percent into a decimal, we would divide 90 by 100, which gives us 0.9.
Multiplying Decimals
Next, we need to multiply the decimal we just calculated by 80. To do this, we can simply use a calculator or do the math manually. To do it manually, we can multiply 0.9 by 80, which gives us 72.
Why is Knowing Percentages Important?
Understanding how percentages work can be incredibly helpful in a variety of situations. Businesses, for example, often use percentages to track their profits and losses. Knowing how to calculate percentages can also come in handy when you’re trying to figure out discounts, interest rates, and other financial calculations.
Practical Applications of Percentages
Let’s say you’re shopping for a new TV and you come across a deal that offers a 20 percent discount. To figure out how much you’ll save, you would need to convert 20 percent into a decimal (0.2) and then multiply that decimal by the original price of the TV. If the TV originally cost $500, for instance, you would multiply $500 by 0.2 to get $100, which is the amount you’ll save.
Conclusion
In conclusion, understanding percentages is an important skill that can be applied in a variety of situations. When it comes to calculating 90 percent of 80, the process is fairly simple: convert the percentage into a decimal, and then multiply that decimal by the number you’re trying to find the percentage of. By keeping these basic principles in mind, you’ll be able to tackle a wide range of percentage-related problems with ease.
