produces parts that North Division could use. The variable cost of the parts is $12.50 per unit and the total manufacturing cost is $19 per unit. The purchasing price paid by North to an outside supplier is $24 and North is purchasing 49,900 units. The selling price charged by South to outside customers is $26. Suppose the transfer price is $21.50 per unit. a. What is the total amount North could save by internal transfer