11 cups of flour divided by 2 3/4 cup of flour (or 2.75) equals 4. then you multiply 4 times 1 1/4 (or 1.25) which equals 5. So if Sue uses 11 cups of flour she will need 5 cups of margarine
I think 12. I'm not sure though. The way I came up with that answer is the tree diagram. I used the numbers 1, 2, 3, 4, . Then I did the tree diagram method.