If six cookies cost the same as 2 brownies, and four brownies cost the same as 10 cupcakes, how many cupcakes can Bob buy for the price of eighteen cookies?

Question

anonymous · Answer

Hi there.  Would you like to learn the material or just get an answer?

anonymous · Answer

15

mathmate · Answer

I was going to say what kt just said.
Miss Pac, here's what you need to do:
C  B  Cup
6 : 2
     4:10
12:4:10  (by doubling the first line)
18:6:15  (multiply everything by 1.5)
So 18 Cookies equals 6 brownies equals 15 cupcakes.