Respuesta :

2023ccnauful

Answer:

21.75 or 21 [tex]\frac{3}{4}[/tex]

Step-by-step explanation:

What I did was 14.5 / 2 to see how many miles were on a 1/3 gallon, then multiplied that answer (which was 7.25) by 3 to get the full 3/3 or 1 gallon.