Colise has 2 vases of flowers that each hold 10 red and 5 yellow roses. Michelle has the same total number of roses but in 3 vases. Each vase has 6 red roses.

Question

How many yellow roses is in each of Michelle's vase?

Answer 1

Michelle has a total of 2*10+2*5 = <<2*10+2*5=30>>30 roses
Michelle has 30-4*6 = <<30-4*6=6>>6 yellow roses.
Each of Michelle's vases therefore contains 6/3 = <<6/3=2>>2 yellow roses. Answer: \boxed{2}.