Question

Takes Sarah 50 minutes to walk to her friend's house `1 3/4` miles away. What is is her walking pace in miles per hour?

Answer 1

`2.1 " mph"`

Explanation:

Use a conversion factor of `(60" minutes")/(1" hour")` to convert units

`frac{1.75 " miles"}{50" minutes"}timesfrac{60 " minutes"}{1" hour"}`

`=frac{(1.75)(6/5)" miles"}{1" hour"}`

`=2.1"miles"/"hour"`