Solution:
The car coveres 120 km in 3 hours (0.5 marks)
Distance covered in one hour = 120÷3=40 km (0.5 marks)
Distance covered in half an hour =40÷2=20 km (0.5 marks)
Distance covered in 5 hours =5×40 km=200 km (0.5 marks)
Distance covered in 512hours= 200 km + 20km= 220 km. (1 mark)