d.

a. NWC Di Si D1 D2 D3 D4 Supply 19 30 50 10 S1 350 70 30 40 60 S2 450 40 8 70 S3 20 900 Demand 250 400 350 700 1700 1700 TC=b. Least Cost Di DI D2 D3 D4 Supply Si 19 30 50 10 SI 350 70 30 40 60 S2 450 40 8 70 20 S3 900 1700 Demand 250 400 350 700 1700 TC=c. Vogel Di Si DI D2 D3 D4 Supply 19 30 50 10 SI 350 70 30 40 60 S2 450 40 8 70 20 S3 900 1700 Demand 250 400 350 700 1700 TC=Consider the following Transportation Model: a. Solve it using North West Corner (NWC) Method. b. Solve it by using Least Cost Rule (LCR). c. Solve it using Vogel Approximation Method (VAM) d. Use the U. V Multiplier Method to test the optimality of the first solution (NWC). Di Si DI D2 D3 DA Supply 19 30 50 10 S1 350 70 30 40 60 S2 450 40 8 70 20 S3 900 Demand 250 400 350 700 1700 1700