What unit rate describes the number of gallons per dollar

Question

5 gallons of gas cost $16.25

the cost per gallon is $3.25

the question

what unit rate describes the number of gallons per dollar?

Answer 1

If $'s/gal = $3.25, then gals/$ are 1/$3.25 = 0.3077.

Answer 2

gallons per dollar = gallons/dollars = 5/16.25 = 0.3077 gallons per dollar