i have 74.1% in my 10th and 75.00 percent in my 12th , but my graduation score is low 50.5% can i get admission in IIM if i score a good percentile in CAT?

Hello Aspirant,
As per the details provided by you, i can say that you have an average academics. As we all are aware that there is a tough competition when getting into iims. It's difficult for you to get a call from IIM A, B, C even if you score a very good percentile if you belong to general category. Also you don't have work experience, even that'll play a vital role in your selection process. But you can surely get a call from new iims if you score a good percentile in cat.

All the best