Question

The home office biling department of a chain of department stores prepares monthly inventory reports for use by the stores purchasing agents. Given the following information, use the critical path method to determine: IMMEDIATE TIME JOB AND DESCRIPTION PREDECESSORS (HOURS) Start b Gut computer printouts of customer purchases 10 Get stock records for the month 10 Reconcile purchase printouts and stock records b. 12 Total stock records by department bc 12 1 Determine reorder quantities for coming period 25 Prepare stock reports for purchasing agents h Finish 9 a. How long the total process will take? Number of hours b. Which jobs can be delayed without delaying the early start of any subsequent activity cand d ande d O e and

Answer 1

Solution:

a. 65 hours is the total project time as the EF of the last activity H is 65.

The below diagram shows this

ES EF 1 в 1 10 11 11 11 D 23 36 12 48 48 G60 48 12 60 O A1 0 60 H 65 605 65 1 1 с 10 11 11 11 E 23 11 12 23 1 23 F 48 23 25 48 1 LS LF The red line indicates the critical path
b. Only activity D can be delayed because the activity has a slack of 25 hours

LS-ES = 36-11 =25