Question: Solve the following LP in three different ways (use TORA for convenience). Which method appears to be the most efficient computationally? Minimize z = 6x1

Solve the following LP in three different ways (use TORA for convenience). Which method appears to be the most efficient computationally?
Minimize z = 6x1 + 7x2 + 3x3 + 5x4
Subject to
5x1 + 6x2 - 3x3 + 4x4 ≥ 12
X2 - 5x3 - 6x4 ≥ 10
2x2 + 5x2 + x3 + x4 ≥ 8
X1, x2, x3, x4 ≥ 0

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