A material with 4 ingredients in the ABCD, then because of raw material to produce different time have different batches, each batch of the composition of the ABCD is different and the known,
Question: suppose there are 40 batch, four batches for each combination, to find out the combination, combination of requirements is the sum of each combination of four batches of A meet an inequality, meet an inequality, the sum of B C meet an inequality, the sum of the sum of D meet an inequality, and combinations of to maximize,