Answer: 9 free cupcakes
Explanation:
First, we will divide the number of cupcakes that are being bought by the given rate, which is ten.
30 cupcakes / 10 cupcakes per three free = 3 specials
Now, we will multiply this by the number of cupcakes per special from the Mini Sweets Bake Shop.
3 special * 3 cupcakes per special = 9 free cupcakes