We are given here that for every 2 bran muffins that the bakery is selling , it also sells 5 apple muffins.
So we can write the ratio of apple muffins to bran muffins as :
Apple muffins : Bran muffins = 5:2
In fraction form it can be written as :

Answer : Ratio is Apple muffins : Bran muffins = 5:2