Twenty percent of 80 is 16. Percent refers to 1/100, so 20 percent is 20/100 and is written in decimal form as 0.20 or 0.2. To calculate 20 percent of 80, multiply 80 by 0.2, the answer of which is 16.
Continue ReadingFiguring percentages is a part of many everyday activities including determining sales tax, interest, tips and even test scores. For example, if a person wants to leave a 20 percent tip on a restaurant bill of $80, he would leave $16. The lowest term fraction for 20/100 is 1/5, so 20 percent can also be calculated as 1/5 x 80, or 16. The symbol for percent is %.
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