please show all the calculations

QUESTION 2 [22] The Cape Concrete Company has plants in three locations (1 to 3) and is currently working on three major construction projects (A to C), each located at a different site. The transportation schedule is as shown in Table Q3 below. Table Q3 Transportation schedule of Cape Concrete FROM B C Capacity 10 1 70 12 5 8 2 50 9 | 7 6 3 60 Requirements 40 50 60 (a) Formulate an initial feasible solution to Cape Concrete's transportation problem using the north-west corner rule. (6) (b) Solve the problem. Use either the stepping-stone or modified distribution method. (16)