She calculates that the average petrol consumption of her car is 12.5 litres/100km . Determine how far she could travel if she filled her car with 65 litres of petrol?

To determine how far Nomsa could travel with 65 litres of petrol, we first need to calculate the distance her car can travel with 1 litre of petrol.

Since the average petrol consumption of her car is 12.5 litres/100km, this means her car can travel 100km on 12.5 litres of petrol.

To find out how far her car can travel with 1 litre of petrol, we divide 100km by 12.5 litres:

100km / 12.5 litres = 8 km/litre

Now that we know her car can travel 8 km with 1 litre of petrol, we can calculate how far she can travel with 65 litres of petrol:

65 litres x 8 km/litre = 520 km

Therefore, Nomsa could travel 520 km if she filled her car with 65 litres of petrol.