What is equivalent to the unit rate of 32 miles per gallon

12 miles per hour This is a fraction equal to

30 miles : 2.5 hours

We want a unit rate where

1 is in the denominator,

so we divide top and bottom by 2.5

30 miles: 2.52.5 hours: 2.5=12 miles1 hour=12 mileshour = 12 miles per hour