answer E only

(E) formulate an LP model to determine an optimal crashimg for each of the activities in order to complete the project within 40 weeks

Problem 2.(20 marks in total) The following table provides basic information about a construction project Activity Activity Description Immediate Estimated Duration Predecessors A Excavate 2 weeks B Lay the foundation A 4 weeks Put up the rough wall B 10 weeks D Put up the roof c 6 weeks E Install the exterior 4 weeks plumbing F Install the interior E $ weeks plumbing G Put up the exterior D 7 weeks siding H Do the exterior EG 9 weeks painting 1 Do the electrical work C 7 weeks Put up the wallboard FI 8 weeks K Install the flooring 4 weeks L Do the interior 5 weeks painting G la -- M Install the exterior H 2 weeks fistures N Install the interior KL 6 weeks fixtures (a) Smar) Drw the project network markUnder normal circumstances, can the project be completed within 10 werk? Why? (c) 2 mark) What are the critical activities (2 mars) What is the critical path of the project? Consider the additional information below: Time Co Activity Normal Crash Normal Crash A 2 weeks I week SI NO DOO 5 200 4 weeks 2 weeks 120.000 420.000 C 10 W 7 weeks 620.000 NOODOO D 6 weeks 4 weeks 200 000 300 F 4 weeks 3 weeks 410.000 570 000 F Swos 180.000 260.000 G 7 w ws 00.000 100 H 200.000 30 DOO 1 210.000 770.000 1 ws 430.000 490.000 160.000 200 DOO 250 JS02 M ock 100.00 200 DOO 330.000 51000 Formula den for each of the