Question

To make 1 1/2 dozen muffins a recipe uses 3 1/2 cups of flour

Answer 1

3 1/2 divided by 3= 1.1666
so 1/2 dozen muffins uses 1.1666 cups of flour.
1.1666 x 2= 2.3332
it takes 2.3332 cups of flour to make a dozen muffins
2.3332 = 2 1/3 cups of flour

2 1/3 cups of flour are needed for every dozen muffins made