Answer :
ANSWER
[tex]338.33\text{ miles}[/tex]EXPLANATION
To solve this problem, we have to apply proportions:
[tex]\begin{gathered} 17\text{4miles=7.2gallons} \\ \Rightarrow\text{x miles = 14 gallons} \end{gathered}[/tex]To find x, cross-multiply:
[tex]\begin{gathered} x\cdot7.2=174\cdot14 \\ x=\frac{174\cdot14}{7.2} \\ x=338.33\text{ miles} \end{gathered}[/tex]That is how far he can travel on a full tank of 14 gallons.