Rates

In our previous lesson, we learnt that ratio can be written as fractions. In this lesson we will expand on the idea and learn about how we can write two quantities as ratios or rates of each other.

--Remember, that for a fraction to be defined, the denominator should not be equal to zero (0). That is for \(\frac{a}{b}\) to be defined b should not be equal to 0 (\(\mathbf{b \ne 0}\)).

A fraction whose denominator is equal to zero is said to be undefined.
\[\frac{2}{0} = undefined\]

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Have you ever wondered how many steps it take to walk from your house to your school, or the time it takes for you to journey from home to school?

We can express those quantities as ratios or rate of each other.

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