Final answer:
To find the kilometers per litre a car travels, divide the total distance by the amount of petrol used.
Step-by-step explanation:
To calculate the number of kilometers a car travels per litre of petrol, we need to divide the total distance traveled by the amount of petrol used. In this case, the car traveled 594 kilometers using 18 litres of petrol. Therefore, to find the kilometers per litre, we divide the distance by the amount of petrol:
Kilometers per litre = Total distance / Amount of petrol
Plugging in the values, we get:
Kilometers per litre = 594 km / 18 L
Simplifying the expression, we have:
Kilometers per litre = 33 km/L
So, the car travels approximately 33 kilometers per litre of petrol.