Question 88443
A+C=210
A=210-C
6A+3.5C=935
6(210-C)+3.5C=935
1260-6C+3.5C=935
-2.5C=935-1260
-2.5C=-325
C=-325/-2.5
C=130 CHILDREN TICKETS SOLD.
210-130=80 ADULT TICKETS SOLD.
PROOF
6*80+3.5*130=935
480+455=935
935=935