Grade 6: Barbeque

I need to go shopping for my family BBQ this weekend. I hope the weather warms up. I know that I will have many guests; however, when I purchase the hotdogs and the buns, they are packaged in different amounts. A package of hotdogs has 12 hotdogs and a package of hotdog buns holds only 8 buns. How many packages of each will I need for an equal amount of both?You know, the lowest common multiple. How many packages of each will I need if I invite 72 guests? I can’t wait to hear your answers so that I can go shopping.