Question

Joe walked four over nine of a mile in four over five of an hour. What is his unit rate in miles per hour?

Answer 1

Joe walked 4/9 of a mile in 4/5 of an hour.
4/9 mile= 715.264 metres
4/5 hour= 48 minutes
715.264/48= 14.902 metres/ minute
14.902 x 60= 894.12 metres/hour.
= 0.556 miles/ hour.

Answer 2

Joe walked
`(5)/(9)` miles/hour.

Explanation:

Joe walked
`(4)/(9)` of a mile in
`(4)/(5)` of an hour.

We can rewrite this statement as

Joe walked in each hour =
`((4)/(9) )/((4)/(5) )`

=
`(4)/(9)` ×
`(5)/(4)`

=
`(5)/(9)` miles per hour.

Joe walked
`(5)/(9)` miles/hour.