Olivia's mom is ordering cupcakes for Olivia's birthday. A pack of 6 cupcakes from Baked Fresh costs $18. A pack of 12 cupcakes from Milk 'n' Creme Bakery costs $37.20. How much more does Milk 'n' Creme Bakery charge per cupcake?

milk ‘n’ creme charges 10 more cents than baked fresh per cupcake
you want to find the unit rate for each cupcake to find out how much more they charge.
first for baked fresh you would do $18/6 cupcakes to get $3 per cupcake, giving you a unit rate of 3
then for milk ‘n’ creme you would do $37.20/12 cupcakes to get $3.10 per cupcake, giving you a unit rate of 3.1
the difference will be found by subtracting the two to get 10 cents difference.
hope this helps !