PROBLEMS 13.1 On a particular day, an iron foundry prepared the charge for cupola as 20% pig iron 1, 25% pig iron 2, and 55% scrap iron. Find the final composition of the produced melt, given the following compositions for the charge clements. Assume suitable losses or gains in the cupola. Carbon Silicon Manganese Sulphur % % % % Pig iron 1 3.20 1.70 0.80 0.03 Pig iron 2 3.50 2.40 0.60 100 Scrap iron 3.25 2.30 0.65 0.08