Since 20% is just 2 x 10%, and since we know that it’s easy to find 10% of any number by dividing it by 10, we see that 10% of 250 is 250/10 = 25, and therefore that 20% of 250 must be equal to 2 x 25 = 50. What about the second example I gave earlier: 250% of 20? According to our rule, 250% of 20 must be the same as 20% of 250. It ain’t magic, it’s math! Pretty cool, right? But 0.01 x 25 is the same thing as 25%, which means that this is equal to 25% of 36. Now here comes the cool part: The opens in a new windowassociative property of multiplication tells us that we can multiply several numbers in any order we’d like. That means that 36% of 25 must be equal to (0.01 x 36) x 25. Since we can write the fraction 1/100 as the decimal number 0.01, we see that the fraction 36/100 can also be written 0.01 x 36. As I mentioned before, 36% is equivalent to the fraction 36/100. It’s helpful to take a minute to see why this seemingly magical trick works. The beauty of this trick is that every time you’ve solved one problem, you’ve actually solved two! And that’s especially useful when one of the problems is much easier to solve than the other-as was the case here. So 25% of 36 is equal to 9, and 36% of 25 must also be 9. How does that help us? Well, since 25% is the same as the fraction 1/4, we see that 25% of 36 must be 36/4 or 9. Taking our example from before, this rule says that 36% of 25 is the same as 25% of 36. Huh? I know that might sound kind of confusing, but it’s actually pretty simple. One trick that will often help you quickly calculate these types of percentages is to use the fact that x percent of y is the same as y percent of x. Why is that so helpful? Because it means that you can quickly calculate 10% of a number simply by moving its decimal point 1 position to the left.īut what about calculating something like 36% of 25? Or maybe 250% of 20? In these cases, our trick of using the power of 10% doesn’t help-so what can we do? How to Quickly Calculate Percentages In particular, it’s easy to calculate 10% of any number since that’s just 1/10 of the number. This turns out to be great news since it makes lots of percentages easy to calculate. And since “cent” here means 100 (as in “century”), we see that the word “percent” just means “per 100.” In other words, 10% means “10 per 100,” which is the same as the fraction 10/100 or 1/10. Let’s start with the most important question: What are percentages? Perhaps the most illuminating thing to know is that the opens in a new windowword “percent” is really just the phrase “per cent” squashed together. To make sure we’re all on the same page, let’s kick things off by taking a minute to recap a few key facts about percentages. See Also: opens in a new window3 Frequently Asked Questions About Percentages Recap: What Are Percentages? Which is exactly what we’re going to turn you into today. Why? Because once you’re caught up, you’ll be ready to step up and learn how to become a true percentage-calculating machine. Roblox currently uses an exchange rate of USD 0.0035 per Robux earned to calculate the amount of real currency you receive.If you’re not sure how to perform any of those handy calculations, or if you’re just in need of a general percentage refresher, I highly recommend taking a look at those earlier shows and getting yourself up to speed. In addition, when you have at least 30,000 Robux in your account, you may be eligible to exchange your earned Robux for real currency using the Developer Exchange program. Once you earn Robux, you can continue to use it in our platform to buy developer assets, plugins, ads, in-experience items, or virtual items. In this case, Roblox is both the seller and the platform and earns 70%, and you earn 30% as the creator. Other times, you might create items that you sell in the Creator Marketplace. For example, if you create and sell an "avatar flying ability" in your experience for 100 Robux, you earn 70 Robux for creating and selling the item and Roblox earns 30 Robux (platform share). This is true when you built an experience and also created the items sold in your experience. Oftentimes, the creator of the item is also the seller of the item.
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