A machine that paints white lines on roads uses 180 litres of paint to paint 6 kilometres of road,what length of road can be painted with 500 litres of paint

Using a proportion method, we can find out the length of road that can be painted with 500 litres of paint.

180 litres of paint can paint 6 kilometres of road.

Therefore, 1 litre of paint can paint 6 kilometres / 180 litres = 0.0333 kilometres of road.

So, 500 litres of paint can paint 500 litres x 0.0333 kilometres = 16.65 kilometres of road.

Therefore, with 500 litres of paint, the machine can paint 16.65 kilometres of road.