Answer: Depends on the question.
Explanation:
In most situations, the smaller number is on the right or left depending on what order you are putting the ratio in. For example: I have 8 oranges and 2 apples --> if I want to find the ratio of apples to oranges then the ratio is 2:8 or 1:4 (simplified), on the other hand, if I want to find the ratio of oranges to apples the ratio would be 8:2 or 4:1 simplified. In summary, it depends on what order the question wants you to answer in.