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Operations Research




                    Notes                                         Unit  Product  Cost
                                                                                Product
                                               Machine               A                B            C
                                                  1                  150             80            75
                                                  2                  120             95            60
                                                  3                  112             100           60
                                                  4                  121             95            50
                                                  5                  125             75            50

                                       Determine the minimum production schedule for the products and machines.
                                   9.  A company has plants at locations A, B and C with the daily capacity to produce chemicals
                                       to a maximum of 3000 kg, 1000 kg and 2000 kg respectively. The cost of production (per kg)
                                       are ` 800, ` 900 and ` 7.50 respectively. Customer’s requirement of chemicals per day is as
                                       follows:
                                                Customer          Chemical Required       Price offered
                                                   1                    2000                  200
                                                   2                    1000                  215
                                                   3                    2500                  225
                                                   4                    1000                  200
                                       Transportation cost (in rupees) per kg from plant locations to customer’s place is given in
                                       table.
                                                                             Customer

                                                                    1       2      3        4
                                                            A       5       7      10      12
                                                 Plant      B       7       3      4        2
                                                            C       4       6      3        9

                                       Find the transportation schedule that minimizes the total transportation cost.

                                   10.  A transportation model has four supplies and five destinations. The following table shows
                                       the cost of shipping one unit from a particular supply to a particular destination.

                                          Source                     Destination                  Supply
                                                      1        2        3         4        5
                                             1       13        6        9         6        10       13
                                             2        8        2        7         7        9        15
                                             3        2        12       5         8        7        13
                                          Demand     10        15       7        10        2
                                       The following feasible transportation pattern is proposed:

                                       x  = 10, x  = 3, x  = 9, x  = 6, x  = 9, x  = 4, x  = 9, x  = 5.
                                        11     12    22    23    33    34   44    45
                                       Test  whether these  allocations involve least transportation  cost. If not, determine  the
                                       optimal solution.







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