In mathematics, a percentage is a way of expressing a number as a fraction of 100 (per cent meaning "per hundred" in Latin). It is often denoted using the percent sign, "%", or the abbreviation
Percentages are used to express how large/small one quantity is, relative to another quantity. The first quantity usually represents a part of, or a change in, the second quantity, which should be greater than zero. For example, an increase of $ 0.15 on a price of $ 2.50 is an increase by a fraction of 0.15/2.50 = 0.06. Expressed as a percentage, this is therefore a 6% increase
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You dillute it with some more of the same solvent used for the 6 percent solution - pressumably water.
The percent of 2,000,00 and 4,000,000 would be 2% and 4%. This is used in math.
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0.5 percent (0.5%) is one half percent. 0.5 is one half or 50 percent. The "cent" part comes from the Latin and means "100", and is the same root used in "centurion" (Roman soldiers were organized into groups of 100), "century" (100 years), "cent" (100 cents in a dollar), "centipede" (100 feet).
point zero one fiveOne and five tenths percent.