Answer:
Adult = 114
Students = 86
Explanation:
If 200 tickets were sold between students and adults (A + S = 200) and 28 tickets were sold more for adults than for students (A = S + 28), then ;
A+S=200 ; A=S+28 →
(S+28)+S=200 → 2S+28=200 → 2S=200-28 → S=172/2 =86
Replacing S in A
A=86+28 = 114