Imagine if the contributor made 5 posts then he obtains,
For First post it is 15 Verdict, which is 1.5 points,
For Second post it is 35 Verdict, which is 3.5 points,
For Third post it is 50 Verdict, which is 5.0 Points,
For Fourth posts it is 72 Verdict, which is 7.2 Points and
For fifth post it is 100 verdict, which is 10 points.
To summarize this, final URS of the contributor will be 27.2 and the main challenging requirement is the quality parameter to achieve it.
Do take a look about Voter URS and criteria.