It would be really helpful if you provide the answer fully handwritten.

please solve a,b,c individually

Thank you in advance.

1. Three outlets A, B and C are supplied by three suppliers X, Y and Z. The table shows the cost, in pounds, of transporting each unit, the number of units required at each outlet and the number of units available at each supplier. 10 X Y Z Demand A 9 10 12 50 B 11 8 7 40 Supply 30 50 40 12 8 30 a) Use the north-west corner method to obtain an initial solution. b) Use the least-cost method to obtain an initial solution. c) Find the total cost of each solution