Departments A, B, C, and D need to be assigned to four rooms 1, 2, 3, and 4. These rooms are arranged in a row, in that order, with 20 meters between each. The departmental work flows are contained in the table below.
Flow Matrix
Dept. A Dept. B Dept. C Dept. D
Dept. A 0 30 5 20
Dept. B 5 0 40 20
Dept. C 0 10 0 40
Dept. D 10 5 0 0
a. What is the material handling total of assigning A-1, B-2, C-3, D-4?
b. What is the material handling total of assigning A-1, B-3, C-4, D-2?