Hello Jagan ,
Generally ,i mentioned here average package offered for B.tech in both NIT's .
If you want more information regarding college like Fee, Courses offered , Student reviews , Placement data , Admission process , Rankings / Ratings e.t.c go through it you get some idea .
NIT Silchar
https://www.careers360.com/university/national-institute-of-technology-silchar
NIT Agartala
https://www.careers360.com/university/national-institute-of-technology-agartala
I think this answer will help you lot .
All the best !!!
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile