To calculate this, we simply divide the distance travelled (154 km) by the average speed. Assuming an average speed of 60 km/h for this journey, the calculation is as follows:
Time = Distance / Average Speed
= 154 km / 60 km/h
= 2.57 hours
Therefore, it would take approximately 2 hours and 34 minutes to drive 154 kms at an average speed of 60 km/h.