Please help solve this Quantitative Analysis problem.

2. Apply the Stepping Stone method to the following transportation problem (a feasible plan is given). Supply To Denver (D) Erie (E) Fresno (F) Griffin (G) FROM Atlanta (A) $5 $3 $6 $7 305 Boston (B) $4 $8 $1 $9 40 20 Chicago (C) $12 $10 $3 5 30 Demand 30 45 125 1 30 60 $8 Total cost = ($5)(30) + ($3)(5) + ($8)(40) + ($1)(20) + ($10)(5) + ($3)(30) = $645 Next, determine the improvement indices as follows: AF: 6-1+83 = $10 (i.e., closed path: AF to BF to BE to AE, back to AF) AG: 73+101+83 = $18 (i.e., closed path: AG to CG to CF to BF, BE, AE, back to AG) BD: 45+38 = -$6 (i.e., closed path: BD to AD to AE to BE, back to BD) BG: 93+101 = $15 (i.e., closed path: BG to CG to CF to BF, back to BG) CD: 85+38+110 ==$11 CE: 128+1-10 = -$5