1. Three outlets A, B and Care 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 each supplier A B C Supply 9 11 10 Y 10 8 12 50 2 12 7 8 40 Demand 50 40 30 30 a) Use the north-west comer 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 2. Use the following information to answer the next three questions