There are six children playing on a playground. Each child has two keychains. What is the ratio of children to keychains?

6:6

6:1

6 to 2

6:12

The correct ratio is 6:12.

The ratio of children to keychains is 6:12.

To determine the ratio of children to keychains, we need to count the total number of children and the total number of keychains.

Given that there are six children, and each child has two keychains, we can calculate the number of keychains by multiplying the number of children (6) by the number of keychains each child has (2).

6 children * 2 keychains/child = 12 keychains

So, there are a total of 12 keychains.

Now we can express the ratio of children to keychains as 6:12. This means that for every 6 children, there are 12 keychains.