You plan to build 8 reports for your new system. You estimate that it will take 8 hours to build all 8, one hour for each report. You have estimated the effort at 8 hours and the duration of the task at 8 hours. If you assign four of the reports to someone else (so two people are working at once), what happens to the duration?

1. Duration is still 8 hours
2. Duration becomes 4 hours
3. Duration can be calculated by subtracting the actual cost from your original estimate.
4. Duration and Effort are equal, regardless of the number of resources