Dear Aaditay,
Final merit list be prepared on the basis of Entrance Test: 50% + Qualifying Examination (+2): 50% + other admissible weightage. Whether you will get a seat or not will depend on the relative performance of other candidates who have applied for this. I came across few more queries of this nature ( Similar Queries ) . Going by them your performance in Test falls in average or above average category but you haven't performed relatively well in 12th. There are 360 seats (BALLB 240 +120 BCom LLB) whether you will get one or not, alot will depend on your position in final merit list. I hope it helps!