A recipe for 12 corn muffins calls for 1 cup of flour. The number of muffins you can make varies directly with the amount of flour you use. You have 2 1/2 cups of flour. How many muffins can you make?
30 muffins.
12 muffins for every 1 cup. 6 muffins for every 1/2 cup. So, 2 cups= 24 muffins and 24+6=30.