OPER2235 Study Guide - Midterm Guide: One Unit, Polskie Radio Program I, Shadow Price

• School: Boston College
• Department: Operations Management
• Course: OPER2235
• Professor: Huang

Document Summary

Xi = # of units of bricks shipped. Min z = 24x11 + 30x12 + 40x13 +30x21 + 40x22 + 42x23. One unit goes from each origin node to each destination node. Abc contractors (only one contractor per project) Xij: #subcontractors from origin i to node j. Min z = 50x11 + 36x12 + 16x13 . X11 + x21 + x31 + x41 = 1. Min z = 5x13 + 8x14 + 7x23 + 4x24 + 1x35 + 5x36 +8x37 + 3x45 +4x46 +4x47. X13 + x23 = x35 + x36 + x37 (flow balance) X14 + x24 = x45 + x46 + x47 ( ) *you should have one constraint for each node. Dvs are # of arcs, but double arrow = count twice (one for each direction) Xij = # of goods shipped from i to j. Min z = 30x12 + 25x13 + 15x23 + 35x25 + 23x24 + 15x32 +25x34 + 32x35 +