Answer:
18 groups
Explanation:
Hope this helped ❤️
i would say 18
out of the letters you gave us only 5 groups out of 25 had 2 freshmen in them if it continues then for each 25 groups 5 will have 2 freshmen so at 50 its 10 at 100 its 15 and at 115 it would be about 18
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