1. What would happen to total time if the different assignment to have operator 1 work with machine A, operator 2 work with machine B, and so on down the diagonal was made instead of the optimal assignment?

A plant has four operators to be assigned to four machines. The time (minutes) required by each worker to produce a product on each machine is shown in the following table: Operator D 9 11 1 2 3 10 5 12 Machine B 12 10 14 15 8 7 13 11 11 4 8 9 A B D 0 1 2 0 1 0 0 1 0 1 1 0 3 0 0 0 1 4 0 1 1 1 1 4 Total 37