Answer:
Your answer is D. 5 children, 12 teens, and 3 adults.
Step-by-step explanation:
45 children, 108 teens, and 27 adults.
x - children , y-teens, z-adults
45x + 108y + 27z
GCF for 45, 108, 27 is 9 so factory out 9 to all.

5 children, 12 teens, and 3 adults.