Question

it took marjorie 15 minutes to drive from her house to her daughter's school. If the school was 4 miles away from her house, what was her unit rate of speed?

Answer 1

unit rate of speed is 0.27 miles per minute .

Explanation:

Here we have , it took marjorie 15 minutes to drive from her house to her daughter's school. If the school was 4 miles away from her house, We need to find what was her unit rate of speed . Let's find out:

We know that ,
`Speed = (Distance)/(Time)` ...........(1)

According to question we have following parameters as :

`Distance = 4 miles\\Time=15min`

Putting these value in equation (1) we get:

⇒
`Speed = (Distance)/(Time)`

⇒
`Speed = (4miles)/(15min)`

⇒
`Speed = ((4)/(15) )(miles)/(min)`

⇒
`Speed = (0.27 )(miles)/(min)`

Therefore , unit rate of speed is 0.27 miles per minute .