If 30% of the registered voters voted in the election and 122,700 votes were cast, how many...


If {eq}30\% {/eq} of the registered voters voted in the election and {eq}122,700 {/eq} votes were cast, how many registered voters are there?


Percents are ratios that are multiplied by one hundred. They can be written as fractions, decimals or by using the percent sign {eq}\% {/eq}. Percents are useful in comparisons because they express ratios as parts of the same whole which is one hundred.

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The problem indicated that the number of votes cast which was {eq}122,700 {/eq} in all represented {eq}30\% {/eq} of the registered voters. To find...

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Calculations with Ratios and Proportions


Chapter 2 / Lesson 13

Even if only 99 out of 100 people need to know how to work with ratios, the odds that they'll be useful to you are very high. In this lesson, we'll practice performing calculations with ratios and proportions.

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