There are 6 refineries, 7 depots and 9 districts. The refineries are BB, BC, BD, BE, BF and BG. The depots are AA, AB, AC, AD, AE, AF and AG. The districts are AAA, AAB, AAC, AAD, AAE, AAF, AAG, AAH, and AAI. Table A gives the cost of transporting one unit from refinery to depot. Table B gives the cost of transporting one unit from depot to a district.
What is the least cost of sending petrol from refinery BB to district AAA?
From the table, we can observe that the minimum cost of sending oil fro BB to AAA is via AB. Hence the total cost is 311.8+205 = 516.8
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