What's 30 Of 60? Understanding Percentages

Introduction

When it comes to math, one concept that many people struggle with is percentages. Whether you’re trying to calculate a tip at a restaurant, figure out the discount on a sale item, or simply understand a math problem, understanding percentages is crucial. In this article, we’ll explore the basics of percentages and answer the question, “What’s 30 of 60?”

What is a Percentage?

A percentage is a way of expressing a number as a fraction of 100. For example, if you say that 50% of something is red, that means that 50 out of every 100 items are red. Percentages are often used to express things like discounts, interest rates, and probabilities.

How to Calculate a Percentage

To calculate a percentage, you need to divide the part by the whole and multiply the result by 100. For example, if you want to know what percentage of 60 is 30, you would divide 30 by 60 and multiply the result by 100:

30 ÷ 60 = 0.5

0.5 × 100 = 50%

So, 30 is 50% of 60.

Common Percentage Calculations

There are a few common percentage calculations that you should be familiar with:

Finding a Percentage

To find a percentage of a number, you need to multiply the number by the percentage as a decimal. For example, if you want to find 20% of 50:

50 × 0.2 = 10

So, 20% of 50 is 10.

Finding the Whole

Sometimes you might know the part and the percentage, but you need to find the whole. To do this, you can divide the part by the percentage as a decimal. For example, if you know that 25 is 20% of the whole:

25 ÷ 0.2 = 125

So, the whole is 125.

Finding the Percentage Change

You can also use percentages to calculate the percentage change between two numbers. To do this, you need to find the difference between the two numbers, divide by the original number, and multiply by 100. For example, if a stock price went from $50 to $75:

(75 – 50) ÷ 50 × 100 = 50%

So, the stock price increased by 50%.

Conclusion

Understanding percentages is an important skill to have in many areas of life. Whether you’re shopping, investing, or just doing some basic math, knowing how to calculate percentages can save you time and money. So, the next time someone asks you “What’s 30 of 60?”, you’ll be ready to answer with confidence.