He can make 36 bars with 6 cups and
48 with 8 cups.
You first need to divide 6 to 2 which equals to 3. This represents the 2 cups for every 12 bars. You then have to multiply 3x12 which equals 36. You follow the same steps for the other question. 8 divided by 2 then multiply your answer by 12. Hope this helped.