Please use the Card rank predictor to know your predicted rank.Follow the below link:

https://engineering.careers360.com/kcet-rank-predictor

In KCET,the weightage of board marks will be only 25% and of CET marks will be 75%.

Thanks for the question.

The weightage for the +2 marks are only 25 % of the aggregate and the rest 75% really depends on the entrance exam marks.

82 marks will be sufficient for you to get a seat in  private colleges only.

Good luck