To determine the time it takes for a train to cover a distance of 100 km, we need to know the speed at which the train is traveling. If we assume a constant speed, we can use the formula:
Time = Distance / Speed
However, since you haven't provided the speed of the train, it is not possible to calculate the exact time. If you can provide the speed of the train, I'll be able to assist you further in determining the time it takes to cover 100 km.