3.3.3.4c - Critical path calculations

Calculate earliest start time, latest finish time and total float.

Use c - critical path calculations to connect the rule to the data and decision in the question.

This matters because c - critical path calculations determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply c - critical path calculations to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: c - Critical path calculations is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.