See most of the placement companies recruits on the basis of the MCA CGPA and they really don't consider the BCA that much. But apart from this the most important thing that can land you a job is the knowledge in the subject and your coding skills. There are numerous students who get placed with less marks due to there good knowledge in the coding subjects. So keep a good marks in your MCA as well as do focus on concept building and application so that you will get some benefit in your placements.

To know more about MCA as a career choice visit the link below:

https://www.careers360.com/courses/mca-master-of-computer-applications

I hope this answer helps. All the very best for your future endeavors!