Question

Sarah bikes 4/5 km in 2 min. What is the unit rate and what does it mean?

Answer 1

The unit rate is
`(2)/(5)` km per minute. It means sarah bikes
`(2)/(5)` km in 1 minute or the speed of sarah is
`(2)/(5)` km per minute.

Explanation:

It is given that Sarah bikes
`(4)/(5)` km in 2 min. It means Sarah covers
`(4)/(5)` km in 2 min.

The units rate is defined as

`\text{Unit rate}=\frac{\text{Distance covered}}{\text{Time Taken}}`

`\text{Unit rate}=(((4)/(5)))/(2)`

`\text{Unit rate}=(4)/(5)* (1)/(2)`

`\text{Unit rate}=(2)/(5)`

Therefore the unit rate is
`(2)/(5)` km per minute. It means sarah bikes
`(2)/(5)` km in 1 minute or the speed of sarah is
`(2)/(5)` km per minute.