A Developed Mathematical Model for Designing a Multilevel Sustainable Supply Chain Network Taking into Account Environmental Decisions

Table 5

WOA output for solved examples.

Test problem	MID	Max-spread	CPU time
1	20.029	9.146	14.93184
2	19.086	17.428	16.58137
3	17.291	15.282	35.45572
4	18.770	20.291	59.27535
5	25.826	20.021	79.87993
6	19.700	28.746	103.0917
7	29.528	35.436	134.1118
8	31.792	48.660	135.7111
9	25.729	46.795	170.0785
10	24.839	54.691	171.0802
Average	23.259	29.650	92.01974