Production and Operations Management

ANSWER THE QUESTION BELOW (QUESTION 3.16 ON PAGE 95) The Rover 6 is a new custom-designed sports car. An analysis of the task of building the Rover 6 reveals the following list of relevant activities, their immediate predecessors, and their duration: LETTER DESCRIPTION IMMEDUNTE NORMAT PREDECESSORIS TIME (DAYS) A Start 0 8 AL 8 Design Order special accessories C B 0.1 D Build frame 1 Build doors F Attach axles, wheels, D gas tank 5 Build body shel 8 2 H Build transmission and drivetrain B 3 1 Fit doors to body shell G. Build engine B Bench-test engine 2 L Assemble chassis LR Road-test chasis L o. N Paint body 2 Install wiring N P Instal interior IN 1.5 o Accept delivery of special accessories C 5 R Mount body and accessories on chassis M.O.P.O 5 Road test car R 05 T Attach exterior trim U Finish T a a) Draw a network diagram for the project. b) Mark the critical path and state its length. c) If the Rover 6 had to be completed 2 days earlier, would it help to: ) Buy preassembled transmissions and drivetrains? ii) Install robots to halve engine-building time? db) Speed delivery of special accessories by 3 days