The scrum team\'s velocity remains very stable, averaging 20 story points per it

Question

The scrum team's velocity remains very stable, averaging 20 story points per iteration (sprint). They have about 200 story points' worth of functionality left in their backlog for this release. However, in each iteration (sprint), they have been discovering there is about 10 percent more work than anticipated, consisting of change requests, technical debt reduction, and new functionality. The product owner would like to know how many more iterations (sprints) it will take before the release will be done.

Explanation / Answer

Average velocity     = 20 story Pts.

Story pts. Worth of functionality left = 200 story Pts.

So, we will finish about 4000 story pts. In those 200 sprints.

After discovering that 10% more work in anticipated. We will finish about,

= 20 x 200 x 10%

= 20 x (2000/100)

= 20 x 20

= 400 Pts.

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