which car has the greatest efficiency?
A 900 kg car that travels 20 km per liter of fuel
A 900 kg car that travels 15 km per liter of fuel
A 1200 kg car that travles 20 per liter of fuel
A 1200 kg car that travles 15 per liter of fuel
A 900 kg car that travels 20 km per liter of fuel
A 900 kg car that travels 15 km per liter of fuel
A 1200 kg car that travles 20 per liter of fuel
A 1200 kg car that travles 15 per liter of fuel