Angelina has five cakes. she wants to cut them into 2/5 pieces. how many pieces will she be able to cut?

She will be able to cut them into 12.5 pieces

Explanation:
We know that the total number of cakes is 5 cakes and that the portion of each piece would be .

To know the total number of pieces she can divide, we would simply divide the total number of cakes by the portion of each cake as follows:
number of pieces = 

number of pieces = 

number of pieces = 12.5 pieces

Hope this helps :)