understand-ratio-concepts-expressing-ratios-in-fractions

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Understand the concept of a ratio and use ratio language to describe a ratio relationship between two quantities.

Watch this video lesson to learn how ratios and proportions are related. Also, learn how ratios and proportions are used in real life and how you can apply them to yours.

Ratios are used to compare values. They tell us how much of one thing there is compared to another. For example, ratios can be used to compare the number of girl puppies to boy puppies that were born. If we have a total of six puppies, where two are girls and four are boys, we can write that in ratio form as 2:4 (girls:boys). We can also write it in factor form as 2/4. To compare the number of boy puppies to girl puppies, we can simply rewrite our ratio with the number of boys first as 4:2 (boys:girls) or 4/2.

In the above examples, we compared the two quantities in terms of ‘how many times’. This comparison is known as the Ratio. We denote ratio using symbol ‘:’

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