Question

6.Mrs. Whitney is baking fifteen dozen cookies for a charity bake sale. Her recipe requires one cup of butter for every thirty-six cookies. How many cups of butter will she use in all?

Answer 1

5 cups of butter.
1 cup per 36 cookies, which is 3 dozen.
She needs 15 dozen, which is 5 times 3 dozen.
So 1 cup times 5=5 cups.