Question 264164
A+C=600  or C=600-A
7A+2C=3,950
7A+2(600-A)=3,950
7A+1,200-2A=3,950
5A=3,950-1,200
5A=2,750
A=2,750/5
A=550 ADULT TICKETS WERE SOLD.
600-550=50 CHILDREN'S TICKETS WERE SOLD.
PROOF:
7*550+2*50=3,950
3,850+100=3,950
3,950=3,950