Answer : If we later run the same distance in less time, the speed will be increases.
Explanation :
First we have to calculate the speed.
Formula used :

Given:
Distance = 100 m
Time = 25 s
Now put all the given values in the above formula, we get:


From the formula we conclude that, the there is an inverse relationship between speed and time at constant distance.
As, the time increases, the speed will be decreases and vice-verse.
As per question, if we later run the same distance in less time, the speed will be increases.
Hence, if we later run the same distance in less time, the speed will be increases.