Final answer:
There are 20 beanies in a ratio to 12 scarves.
Step-by-step explanation:
To find the number of beanies that are in a ratio to 12 scarves, we can use the given ratio of beanies to scarves.
The given ratio is 15:9.
To find the number of beanies, we need to find the fraction that represents the ratio of beanies to scarves.
We can set up a proportion: 15/9 = x/12, where x represents the number of beanies we want to find.
To solve for x, we can cross-multiply and get:
15 * 12 = 9 * x.
Simplifying this equation, we get:
180 = 9x.
Dividing both sides by 9 gives us x = 20.
Therefore, there are 20 beanies in a ratio to 12 scarves.