Answer: 0.1 dollars more
Step-by-step explanation:
18 dollars / 6 = 3 dollars for every cupcake from Baked Fresh
37,20 dollars / 12 = 3.1 dollars for every cupcake from Milk 'n' Creme Bakery
3.1 - 3 dollars = 0.1 more dollars charging for every cupcake