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Translations of Encyclopedia about Mathematics


Percent and Interest

 Calculating percentages is an inseparable aspect of our lives: when shopping we calculate rebates and discounts, in banks we compute interest rates, and we use interest to calculate a company’s earnings.

 The word percentage comes from Latin and means out of one hundred. The sign % is a mathematical symbol which expresses a percentage. Calculating with percentages has much in common with calculating with fractions except, in this case, the denominator is always 100.

 For example:

 3 % =