Answer:
There are 4 yellow roses
Explanation:
I have took the k12 test (more detailed info down below)
Colise has 2 vases, each of which can hold 10 red and 5 yellow flowers....2 x 15 Equals a total of 30 roses. In addition, Michele possesses thirty roses. She possesses 3 vases, and each vase contains 6 red flowers, for a total of 18 red roses. That leaves 12 yellow flowers after subtracting 18 from the total. And if I am correct in my assumption that each vase contains the same amount of roses, then 12 divided by 3 equals 4 yellow flowers in each vase.