we know that
Unit Rate is the ratio of two measurements in which the second term is [tex]1[/tex]
by proportion
Find the number of miles a car drives with a gallon of gasoline
[tex]\frac{283}{12.3} \frac{miles}{gallons} =\frac{x}{1} \frac{miles}{gallon}\\ \\12.3*x=283\\ \\x=283/12.3\\ \\x=23\ miles[/tex]
therefore
the unit rate is equal to [tex]23\frac{miles}{gallon}[/tex]
The answer is
[tex]23\frac{miles}{gallon}[/tex]
