Question

4/5 of a mile in nine minutes, what is the unit rate in miles per hour?

Answer 1

Answer: 5.33 miles per hour.

Explanation:

You know:
`(4)/(5)` of a mile in nine minute.

Then:

You need to convert 9 minutes to hours (Remember that there is sixty minutes in one hour). Then:

`(9min)((1hour)/(60minutes))=(9)/(60)hours`

Now, you need to divide
`(4)/(5)miles` by
`(9)/(60)hours`.

Therefore, the unit rate in miles per hour is:

`=((4)/(5)miles)/((9)/(60)hours)\\\\=((4*60)/(5*9))\\\\=5.33(miles)/(hour)`

(5.33 miles per hour)