Answer:
24
Explanation:
There are 5 yellow candies for every 6 candies.
5x4 is 20, and we know there are 20 yellow candys (The 5 in the multiplication problem being the 5 yellow candies for every 6 candies.).
So, then I multiplied 6x4 to get 24. This may not always work but it is a (I believe) a proportional relationship.