Question

If a person runs 1/3 mile in 1/9 of an hour what is the unit rate per hour

Answer 1

3 miles per hour

Explanation:

he runs 1/3 mile in 1/9 of an hour

then

he runs (we multiply both sides by 9)

9×(1/3) mile in 9×(1/9) of an hour

then

he runs

(9/3) mile in (9/9) of an hour

then

he runs

3 mile in 1 hour