\begin{tabular}{ll} 2.5.7. & \( \begin{array}{l}\text { How far can it travel on } 15 \text { litres of petrol? } \\ 2.5 .2 .\end{array} \) \\ \( \begin{array}{l}\text { What is the rate at which the car consumes petrol in litres } \\ \text { per } \mathrm{km} \text { ? }\end{array} \) \\ \hline\end{tabular}

To determine how far a car can travel on 15 litres of petrol, you'll first need to know its fuel efficiency in litres per kilometre. For example, if the car consumes 0.05 litres per km, you would divide 15 litres by 0.05 litres/km to find that it can travel 300 km on that amount of petrol. It’s always handy to keep a calculator in your glove box for quick math on road trips! When it comes to fuel consumption, common mistakes often involve not considering driving conditions, which can dramatically affect efficiency. For maximum accuracy, check your car’s manual for the average fuel consumption under various conditions (city vs. highway driving) and always consider factors like weight, tire pressure, and driving style. These will give you a clearer picture of what to expect on your journey. Happy driving!