A batch of cookies requires 2 cups of milk and 4 eggs. If you have 9 cups of milk and 9 eggs, how many batches of cookies can be made?

With 9 cups of milk, 9/2 =4(1/2) or four full batches can be made. However, with nine eggs, only 9/4 =2(1/4) or two full batches can be made. At most, only two batches can be made with the given ingredients.