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.

(a) What is the material handling total of assigning A-1, B-2, C-3, D-4?

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

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.

(b) What is the material handling total of assigning A-1, B-3, C-4, D-2?

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

Which layout do is superior:

		A-B-C-D (a)
		A-D-B-C (b)
		They are the same
		We don't have enough information to determine