Total Cookies Baked by Lucy

Lucy bakes cookies for a bake sale. She prepares 3 trays of cookies, and each tray holds 12 cookies. After baking, she decides to make an extra 5 trays of cookies, with the same amount per tray. How many cookies does Lucy have in total after baking all the trays?

To find the total number of cookies, calculate the number of cookies from the first 3 trays and then add the number of cookies from the additional 5 trays.