It is usually to cover up some mistake or area of weakness. Sometimes it is to brag about something and make themselves look better.
You can infer that the planets year is longer than Jupiters, but still shorter than Saturn's year, so you can add up Jupiter's and Saturn's orbit and divide by 2 to get more information about this "new planet".
8 and 1/2 yeah this is the answer
82.5820063 if you do that with straight math
Relax and go to a quiet place and study and make sure that you take breaks about 5 to 10 mins so u don't get to stressed out
