What is 80% of 500?
a) 400
b) 392
c) 380
d) 412
The Correct Answer and Explanation is:
To find 80% of 500, you can use the formula:
[
\text{Percentage} = \frac{\text{Percent}}{100} \times \text{Whole}
]
Here, the percent is 80, and the whole is 500.
[
80\% \text{ of } 500 = \frac{80}{100} \times 500 = 0.80 \times 500 = 400
]
So, the correct answer is a) 400.
Explanation:
Percentage calculations are widely used in various real-life situations, such as discounts, population growth, and test scores. When calculating percentages, the basic idea is to find what part or fraction of a whole is being represented by the percentage.
In this problem, you’re asked to find 80% of 500. To solve it, you convert the percentage into a decimal by dividing by 100. For 80%, you divide 80 by 100, which gives 0.80. Then, multiply this decimal by the whole number (500). The multiplication yields 400, which represents 80% of 500.
In other words, if you were to take a group of 500 items and wanted to know what 80% of that group would be, you would have 400 items. This kind of calculation is common in everyday scenarios. For example, if you receive an 80% discount on an item that costs $500, you’d be paying $400. Similarly, if a student scores 80% on a test with 500 points available, they would have earned 400 points.
Understanding percentage calculations allows you to handle tasks related to finance, grades, health (like determining nutrient percentages), and many other areas where part of a whole is being examined.