to make 16 browns you need:
1 cup butter
6ounces of chocolate
2 cups of sugar
2 1/2 teaspoon vanilla
4 eggs
1/2 cup of flour
so how much butter, chocolate, sugar,vanilla, eggs and flour is need to make 24 browns?
24/16 = 1.5
Multiply each of the measurements by 1 1/2 or 1.5
Butter: 1 * 1 1/2 = 1 1/2
Chocolate: 6 * 1.5 = 9
Take it from here.