IB skill practice

Use critical path analysis

Use activity times and dependencies to determine project duration and float.

Paper 1, Paper 2 5 marks Difficulty 4

Use critical path analysis - method focus

A water-quality team project has two candidate critical paths after the start activity: \(A-B-D\) with times 5, 5, 7 and \(A-C-D\) with times 5, 2, 7. Find the project duration. This version asks for the same mathematical quantity after confirming the method from the context. Enter the requested value and choose the interpretation that matches the result.

Worked practice: result and interpretation

Calculate the requested result first, then choose the interpretation that follows from it.