Question

Complete the following statement.
Unit rate is a ratio between two quantities such that ___________

• A. the quantities have different units with the denominator as $1$.
• B. the quantities have the same unit with the denominator as $1$.
• C. the quantities have different units with the numerator as $1$.
• D. the quantities have the same unit with the numerator as $1$.

Answer 1

The correct option is A the quantities have different units with the denominator as $1$.

Unit rate is a ratio that compares two quantities of different units, where the first quantity is compared with one unit of the second quantity.
It is a ratio whose denominator is $1$.

For example, if you run $80$ m in $10$ s, the average rate at which you run can be found by dividing $80$ by $10$. It implies, you run $8$ m in $1$ s. Here, the ratio $8$ m to $1$ s is a unit rate.

That is, the units of the two quantities need to be different to find the unit rate.