In order to answer that question we would have to know how many people are in the group For example: if there are ten people in the group then the fraction would be 8/10 If there are 20 people in the group then the fraction would be 8/20 I hope this helped
To answer the question you need to know how many students n all are in the group then 8 would be the numerator and the number of all the students in the group would be the denominator