QUESTION - 4/35 2020033800121555 : A manufacturer produces four products A, B, C and D each of which is processed on three machines X, Y and Z. Profit maximization Linear Programming problem can be formulated as Maxi Z = 4X1 + 6X2 + 3X3 + X4 Subject to constraints 1.5X, + 2X2 + 4X3 + 3X, $ 550 machine X constraint 4X1 + X2 + 2X3 + X, $ 700 machine Y constraint 2X1 + 3X2 +X3 + 2X, $ 200 machine Z constraint X1,Xz,X3.X, 20 For above LPP optimal solution is given by 6 3 1 0 Cb Basis XB X XA S1 Sz 3 125 1/20 0 1 1/2 3/10 0 -1/5 425 13/4 0 -1/2 -1/2 0 6 X 25 13/20 1/2 -1/10 2/5 Which machine(s) has(have) excess capacity available? How much