Question:
A lorry starts with a load of 20 tonnes of goods from Station A. It unloads 8 tonnes at Station B and rest of the goods at Station C. It reaches back directly after getting reloaded units 16 tonnes of goods to Station C. The distances from A to B, B to C and C to A are 80 km, 120 km and 160 km, respectively. Compute absolute tonne-km and commercial tonne-km.