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A simple way to calculate percentages of X (7th Aug 21 at 12:16pm UTC)
A simple way to calculate percentages of X
Percentage as a unit of measurement this term has a Latin origin: "percent" can be translated as "per hundred". Basically, it's a hundredth of something. In mathematics and Computer Science has its designation - "%". That is, 10 kg of a ton (which is, as you know, 1000 kg) - this will be only 1 %. In schools, the concept of percentage is often explained by the example of a pie. So, a whole cake is one unit (or 100 %). If we cut half of it, it will be 50% , if a quarter is 25%.
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Percentages were known (and actively used as a kind of calculation system) in the ancient Roman state. Then fractions were used as a determination of the size of the goods tax (their value was one hundredth). As evidenced by numerous sources, this fractional system was actively used later, already in the Middle Ages. With its help, we calculate the size of interest rates, as well as the amount of income and losses. From the 17th century, this system became a general standard for such calculations. On the territory of our country, the interest system took root during the great reformer Peter the great. However, it can be argued that it existed before in the form of linking money (coins) to the Standard 1:100.
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