Question 699691
A+C=11
A=11-C
22A+15C=228
22(11-C)+15C=228
242-22C+15C=228
-7C=228-242
-7C=-14
C=-14/-7
C=2 CHILDREN TICKETS WERE SOLD.
A=11-2
A=9 ADULT TICKETS WERE SOLD.
PROOF:
22*9+15*2=228
198+30=228
228=228