Examples
Examples
Try the starting example
- Assembly tasks: name, prerequisite names joined by | or none, minutes, helpers
- Desk,none,60,2 Chair,none,30,1 Shelf,Desk,20,2
- Available helpers
- 3
- All assembly finished after (minutes)
- 80
- Task start–finish schedule (minutes)
- Desk: 0–60; Chair: 0–30; Shelf: 60–80
- Total person-minutes of work
- 190
- Unused helper capacity before completion (person-minutes)
- 50
Try another scenario
- Assembly tasks: name, prerequisite names joined by | or none, minutes, helpers
- Desk,none,60,2 Chair,none,30,1 Shelf,Desk,20,2
- Available helpers
- 2
- All assembly finished after (minutes)
- 110
- Task start–finish schedule (minutes)
- Desk: 0–60; Chair: 60–90; Shelf: 90–110
- Total person-minutes of work
- 190
- Unused helper capacity before completion (person-minutes)
- 30
Calculation method
Calculation method
All assembly finished after (minutes)
Event-based list scheduling: launch ready tasks in input order when all prerequisite tasks are complete and enough helpers are free.
Task start–finish schedule (minutes)
Each task occupies its entered helper count throughout its uninterrupted duration.
Total person-minutes of work
Sum task duration × helper count.
Unused helper capacity before completion (person-minutes)
Available helpers × final completion time − total person-minutes.
Symbols and units
- a
- Assembly tasks: name, prerequisite names joined by | or none, minutes, helpers
- b
- Available helpers
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- A nonpreemptive helper-and-dependency schedule using supplied manual time estimates and crew needs. It does not infer assembly instructions, safe lifting requirements or an optimal task order.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.
Further reading
OpenStax: arithmetic and geometry ↗
Background reading; this does not imply endorsement or independent review of SumFizz.