The Ratios, Rate and unit rate are used to solve many real-world problems.
Let us defined ratios, rates and unit rates and see the real world examples below.
As a ratio is a comparison of two numbers or measurements.
For example, if a store sells 5 black color pens and 7 blue color pens, then the ratio of black to blue pens is 5 to 7.
A rate is also a ratio in which the two terms are in different units.
For example, if 2 galloons of milk costs 8 dollar, then the rate is 2galloons for
8 dollar. And the unit is galloons per dollar.
As Rates are used in our daily life, such as when we work 40 hours per week or take 2 liters of water per day. When rates are expressed as a quantity of 1, such as 2 liters of water per day that is, per 1 day or 6 miles per hour that is, per 1 hour. So they can be defined as unit rates.
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