Solve the following model on QM for Windows:

Minimize $P_1{d}_1^{-},P_2{d}_2^{-},P_3{d}_3^{+},P_4{d}_4^{+},4P_5{d}_5^{-}+5P_5{d}_6^{-}$

subject to:

$x1+2x2+d_1^{-}-d_1^{+}=40$

$401+502+d_2^{-}-d_2^{+}=1,600$

$41+32+d_3^{-}-d_3^{+}=120$

$d_1++d_4^{-}-d_4^{+}=10$

$x1+d_5^{-}=30$

$x2+d_6^{-}=20$

$x1,x2,d_1^{-},d_1^{+},d_2^{-},d_2^{+},d_3^{-},d_3^{+},d_4^{-},d_4^{+},d_5^{-},d_6^{-}0$