Answer to Question #257211 in Operations Research for Haile

Question

An established company has decided to add a new product to its line. It will buy the product from a manufacturing concern, package it, and sell it to a number of distributors selected on a geographical basis. List of activities involved in the new product introduction and their immediate predecessors are shown in the following table (4 points). Activity Preceding Actives Activity duration (Days) A --- 4 B --- 7 C --- 6 D A, B 5 E A, B 7 F C, D, E 6 G C, D, E 5 a. Draw the project network using the Activity on Arrow (A-O-A) convention. b. Compute float (slack) time of each activity. c. Determine the critical path and calculate the project duration (completion time)

Answer 1

(a)The project network will be as shown below;

(b)Slack time for each activity will be as calculated below.

The critical path: B-E-F (1-3-5-6-7)

Completion time will $\therefore$ be (7+7+6+0)=20 days