25% of players are older than 24 years old.
This can be determined by finding the interquartile range (IQR) which is the difference between the upper quartile (Q3) and the lower quartile (Q1). In this case, IQR = Q3 - Q1 = 24 - 16 = 8.
Since the upper quartile (Q3) is at 24 and 75% of the data falls below this value, then the upper 25% of the data falls above this value. Therefore, approximately 25% of players are older than 24 years old.