Answer: 1 cup of flour will be left.
Explanation:
A bakes started with quantity of flour =12 cups
As she had
cups of flour left after the first bunch of batter
Thus, the quantity she use to make first batter=


Since, she made she had
cups of flour left after the second bunch of batter
Thus, the quantity she use to make first batter=


Thus, she use
for each batter.
Flour used in making 2 more batter=

Thus, Cups of flour left=

