hardMultiple ChoiceObjective-mapped
PK0-005 Practice Question: A project manager is working on a construction…
A project manager is working on a construction project and needs to calculate the total float for a non-critical path activity. The activity has an early start of day 5, late start of day 10, early finish of day 15, and late finish of day 20. What is the total float?
⚠ Common exam trap
It's easy for candidates to confuse activity duration (Early Finish minus Early Start) or individual dates (Late Start or Late Finish) with the float calculation, leading candidates to pick 15, 20, or 10 days instead of correctly computing the difference.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
5 days
Total float is calculated as Late Start minus Early Start (or Late Finish minus Early Finish). Here, Late Start (10) minus Early Start (5) equals 5 days. This represents the amount of time the activity can be delayed without affecting the project's overall completion date.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
15 days
Why it's wrong here
15 is the activity duration, not float.
- ✗
20 days
Why it's wrong here
20 is the late finish, not float.
- ✓
5 days
Why this is correct
Total float = late start - early start = 5 days.
- ✗
10 days
Why it's wrong here
10 is the difference between late finish and early start, not total float.
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