How long does it take to drive 45 km?

The time it takes to drive 45 km depends on the speed at which you are traveling. If you are driving at a constant speed of 60 km/h, it would take you 45 minutes to cover the 45 km distance. However, if you are traveling at a speed of 90 km/h, it would take you 30 minutes to cover the same distance. The formula to calculate the time taken is Time = Distance / Speed.