A farmer has weaner calves that require 20% protein. Her winter diet can only supply 8% protein. In her feed shed she has maize with 9% protein. She then needs to buy a high protein concentrate containing 31% protein to mix a supplement for her calves. Using a Pearson square formulate a supplement with 12% protein. The farmer has 50 tons of maize. (8)
3.2 Calculate the amount of concentrate she must order from the co-op? (2)
