How is CGPA calculated in National Institute of Electronics and Information Technology agartala?

In NIELIT Agartala CGPA is calculated on a 10-point grading system. Grade  10, 9, 8, 7, 6, 5, 4, 3, 2

CR  (credits) and GP (grade points)

Addition of all subject CR*GP / Addition of all subject CR = SGPA

CR * GP / CR = CGPA  (included all semester)

CGPA (Cumulative Grade Point Average) is calculated at NIT Agartala on a 10-point grading system. 

Example:

Grade  10  9  8 7 6  5  4 3  2

 Point  A+     A  B+      B C+   C  D+   D  E 

(10 + 9 + 8 + 6 + 3)/5 = 7.2