Comprehensive Guide on Percentages, Calculations And Applications

Introduction

The word Percent has been taken from the Latin word "per centum" which means "by the hundred". Percent is a term which is used in daily life too often.

Examples of use of the percent are: a person saves 30% of his income every month, a student scored 90% in the class tests and the population of the country has increased by 10%. On the bottles of syrups, a percent value of the quantity of salts is printed e.g. 1% or 3% by volume or weight.

Other places where percent can be seen while shopping for goods. Goods are purchased by shopkeepers at some price which is the cost price. When the shopkeeper sells the goods for some price, the price is called the selling price of the item.

On the shopping windows, the items are put on sale with some discount labels which are generally written in percent e.g. 30% sale. The shopkeeper can make a profit or sometimes has to sell the item at a loss. These profits and losses can again be calculated in terms of profit and loss percentages.

The lessons in this sub unit of Percentages explains the concept of percent and the prices. It gives methods to calculate the percent of a number and its conversions to fractions and decimal forms. It lists all types of prices of an item and methods to calculate profit and loss percentages.