[tex]\begin{gathered} \text{speed}\Rightarrow60miles\text{ /hour} \\ \text{already driven=55 miles} \\ \text{total distance=235 miles} \\ \text{need to cover=235-55=180miles } \\ \text{time taken to complete the remaining distance is,} \\ t=\frac{180}{60}=3\text{ hour} \end{gathered}[/tex]
