Answer:
8:1
Explanation:
Divide data A by data B to find your ratio. In the example above, 5/10 = 0.5. Multiply by 100 if you want a percentage. If you want your ratio as a percentage, multiply the answer by 100.
We can divide the campers (872) by the number of counselors (109), leading us to 8. Therefore, there are 8 campers per counselor.