The diagram below was developed for the project launch of Kitty Condo, a new pro

Question

The diagram below was developed for the project launch of Kitty Condo, a new product in the luxury cat cage market. Suppose that you are interested in finding ways to speed up the project at minimal additional cost. Determine the schedule for completing the project in 28 days at minimum cost. Penalty and project overhead costs are negligible. Time and cost data for each activity are shown below Crash Time Cost (S) Normal Activity days) Time Cost (S) (days) Diagram 1,300 1,050 3,000 2,000 650 700 1,550 600 2,200 2,500 1,165 4,600 2,600 1,100 1,100 2,050 800 4,900 12 AYE 12 Fill in the table below to show the proper schedule for completing the project in 28 days at minimum cost (i.e., the activity times with crashing for each activity). (Enter your responses as whole numbers.) Time according to schedule (days) Time according to schedule (days) Activity Activity

Explanation / Answer

Critical path: A-E-H and the duration of the project (before the start of crashing) is 31 days

From 31 to 30 days

Slope = (Crash cost - Normal cost) / (Normal time - Crash time)

Based on the minimum slope, crash H by one day.

Critical path: A-E-H and the duration of the project (before the start of crashing) is 30 days.

From 30 to 29 days

Based on the minimum slope, crash E by one day.

Note that two critical paths have emerged - A-D-G and A-E-H which need to crashed simultaneously in the next step.

From 29 to 28 days

The best way to crash both the critical path is to crash E and G both by 1 day each.

Answer

Project paths Normal duration A-D-G 29 A-E-H 31 B-F-H 27 C-I-H 25

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