I am sorry but you have to have minimum 50% marks in your graduation to be eligible for writing CAT.
But, if you belong to any othe the categories like – SC/ST/PD , then aggregate marks required reduces to 45%.
If you are not one of the above. Don’t loose hope. You have a plethora of other options left for your carrier ! 🙂
You need a minimum of 50% in graduati for CAT. But you can try and pursue MBA from any private university if you desire to have a career as a Manager only. Private Universities offer great placements too. You can combine MBA with various online courses related to management and see a great career path as you graduate from there.