Examples of percent in the following topics:
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- It is often denoted using the percent sign or the abbreviation "pct."
- For example, 45% (read as "forty-five percent") is equal to 45/100, or 0.45.
- Mixture problems may involve combining two or more substances or objects and require you to find the percent of one of those substances out of the entire mixture.
- The percent value is computed by multiplying the numeric value of the ratio by 100.
- Conversely, a negative percent value can represent a decrease in a value, as in a -5% change in sales, which would indicate a 5% drop.
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- The formula relating gratuity (G), cost (c), and desired percent gratuity (r, expressed as a decimal).
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- According to the United States Census Bureau, over the last 100 years (1910 to 2010), the population of the United States of America is exponentially increasing at an average rate of one and a half percent a year (1.5%).
- GDP per capita has grown at an exponential rate of approximately two percent per year for two centuries.
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- He was able to come up with the formula that if the interest rate is $r$ percent and is calculated $n$ times per year, and the account originally contained $P$ dollars, then the amount in the account after $t$ years is given by $A=P(1+{r \over n})^{nt}.$ By then asking about what happens as $n$ gets arbitrarily large, he was able to come up with the formula for continuously compounded interest, which is $A=Pe^{rt}
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- that is, approximately 79 percent of the circumscribing square (whose side is of length d).