It takes 2×3=6 minutes to bake two cakes. There are three situations: 1. Only one pot, 6÷2=3 times, 3×6= 18 minutes. 2. There are two pots. It only takes 6 minutes to cook four cakes at the same time, and it takes 6 minutes to cook the second time. Three pots only take 6 minutes, because at the same time, it takes at least 6 minutes according to the meaning of the question.