Question 114029
A+S=200 OR A=200-S
5.5A+4S=980
5.5(200-S)+4S=980
1100-5.5S+4S=980
-1.5S=980-1100
-1.5S=-120
S=-120/-1.5
S=80 IS THE NUMBER OF STUDENT TICKETS SOLD.
200-80=120 IS THE NUMBER OF ADULT TICKETS SOLD.
PROOF
5.5*120+4*80=980
660+320=980
980=980