Solution:
The car was filled with 42L of gasoline.
The car consumes at the rate of 8L per 100km.
![\begin{gathered} \text{This means for every 100km covered, the car consumes 8L.} \\ \text{Hence,} \\ 8L=100\operatorname{km} \\ 1L=(100)/(8)km \\ \\ \text{Thus, 42L will cover the distance of;} \\ 42L=(100)/(8)*42\operatorname{km} \\ 42L=525\operatorname{km} \\ \\ \text{Thus the 42L filled will be enough to cover 525km at the consumption rate of 8L per 100km.} \end{gathered}]()
This means the 42L will be enough to cover the entire 360km.
Thus, you can go farther after the trip by;
![525-360=165\operatorname{km}]()
Therefore, you can go 165km farther after the trip of 360km with 42L gasoline in the tank.