Hello Sakthivel ,

Your friend's percentile after calculation is 125/4+ 85/2=73.75 . With this percentile you can get admission to decent colleges in Tamil Nadu. You can check the top colleges in Tamil Nadu accepting NATA scores by below link.

https://engineering.careers360.com/colleges/list-of-engineering-colleges-in-tamil-nadu-accepting-nata

For more information about seat availability and cutoffs for admission ,you can check the below link.

https://engineering.careers360.com/exams/nata

Good Luck.