From table – 190 000 kg, 6515 NAM, 459 kts
6515 – 459 = 6056 NAM → 184 600 kg
190 000 – 184 600 = 5400 kg/hr
Fuel mileage – ground distance covered in 1 hour 459 + 100 = 559 NGM
Therefore NM/1000kg = 559/5.4 = 103.5 NM/1000kg