Table 3 Variation in decision variables for Problems 1, 5, and 9.

Parameters	% Variation	Value	Crisp model		Fuzzy model		Cloudy fuzzy model
Parameters	% Variation	Value	\({T}_{1}\)	TC	\({T}_{1}\)	TC	\({T}_{1}\)	TC
T	−50%	50	42.8545	101,62	41.81	103,522	46.105	165,387
	−25%	75	47.2301	104,785	45.455	105,272	48.3065	140,726
	0	100	49.29	137,212	49.80	140,222	51.210	150,405
	25%	125	55.525	192,185	55.230	196,150	54.821	187,125
	50%	150	59.785	260,203	59.81	274,119	58.9102	230,285
r	−50%	0.005	49.651	175,618	49.987	176,324	51.195	190,525
	−25%	0.0075	49.50	153,354	49.875	154,485	51.32	167,304
	0	0.01	49.29	137,212	49.80	140,222	51.210	150,405
	25%	0.0125	49.291	123,501	49.123	124,826	51.378	130,395
	50%	0.015	49.265	119,401	49.056	110,495	51.59	118,604
λ	−50%	0.75	47.0251	146,135	58.8561	952,812	60.256	95,541
	−25%	1.125	52.156	120,856	53.1237	120,785	55.012	127,129
	0	1.5	49.29	137,212	49.80	140,222	51.210	150,405
	25%	1.875	46.935	148,376	47.912	151,095	48.576	160,876
	50%	2.25	44.1851	156,905	45.865	160,865	46.912	175,012
α	−50%	30	34.001	107,501	34.501	112,208	36.5001	83,712
	−25%	45	42.051	130,127	42.517	134,204	44.080	129,910
	0	60	49.29	137,212	49.80	140,222	51.210	150,405
	25%	75	55.12	138,932	56.137	140,172	57.763	160,218
	50%	90	62.012	136,856	62.129	138,645	64.012	165,248

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