I have about 15 adult chickens and about 20 chicks that are all in the coop together. I have had them for quite a while and I have been feeding them about 1 cup scratch and 2 cups crumbles. Is this enough or too much? I need to know the amount each chicken requires. I have a small business and I am running out of feed before I can make any money selling the eggs so I am trying to cut costs. It cost me about $10.00 for a 50 lb. bag of scratch and about $15.00 for a bag of crumbles and that usually lasts a month. How can I make this last about a month and a half so I can make the money back from selling eggs?