So since we know that 2 cups of flour gives us 3 dozens (36 cookies), we can divide both by 2 to see how much 1 cup of flour gives us. That would give us 1.5 dozens (18 cookies) for 1 cup of flour. So 3 cups of flour would make 54 cookies. Then we can divide 1 cup of flour by 3 to see how much 1/3 cup of flour would give us. 1/3 cup makes 6 cookies so 3 1/3 makes 60 cookies.
