Explanation Given: The table for all task on painting a room as below, Task Length Dependencies a. Select paint color 2 days b. Calculate square footage of area to be painted 30 minutes c. Buy paint 1 hour a, b d. Buy drop cloths, brushes, rollers, TSP, tape 1 hour e. Wash walls with TSP 2 hours d f. Remove lights, plug covers, and switch covers 30 minutes g. Tape walls and windows alongside trim 1 hour d h. Paint trim 3 hour c, d, e, g i. Let trim paint dry 2 hour h j. Remove wall tape 15 minutes i k. Tape trim alongside walls 1 hour d, i l. Paint walls 3 3 hour c, d, e, f, g, h, k m. Let wall paint dry 2 hour l n. Remove trim tape and window tape 15 minutes m o. Replace lights, plug covers, and switch covers 30 minutes m p. Clean brushes, rollers 30 minutes l q. Dispose of drop cloths, tape 15 minutes n Calculation: Step.1: Consider the given table of tasks. Step.2: Draw an edge for those tasks which has no dependencies on any other task as follows, As shown in table (1) tasks a, b, d and f are not depend on any task hence edge for these task is as below, Figure (1) Step.3: Draw an edge for those tasks which are depend on the independent tasks a, b, d and f as follows, Since as shown in table (1) tasks c, e and g are depends on a, b, d and f hence edge for these task is as below, Figure (2) Step.4: Draw an edge for those tasks which are depends on already known tasks as follows, Since tasks a, b, c, d, e, f and g are already known. Hence here find the dependencies for tasks h, I, j, k, l, m, n, o, p, and q as follows, As shown in table (1), Task h depends on the already known task c, d, e and g. Task i depends on known task h. Task j depends on known task i. Task k depends on known tasks d and i. Task l depends on known tasks c, d, e, f, g, h and k. Task m depends on known task l. Tasks n and o depend on known task m

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ISBN: 9781305104174

Author: David B. Johnson, Thomas A. Mowry

Publisher: Cengage Learning

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Chapter 9.5, Problem 1E

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A PERT chart for painting a room and critical path and listing of milestones.

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Chapter 9.4, Problem 60E

Chapter 9.5, Problem 2E

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A PERT chart for painting a room and critical path and listing of milestones.