Question

Haley is making cake for her party. she needs to make 6 servings of cake for every 3 people. if each cake pan contains 12 servings, what is the minimum number of cakes she needs to make on order to have enough to feed 21 people?

Answer 1

6 servings = 3 people
1 cake=12 servings which feed 6 people
6/x=3/21
3x=126
x=42 servings
42 servings/12(amount of servings in a cake)=3.5. She will need to bake 4 cakes.