Hi Aspirant,

Yes, you can pursue BA in Philosophy with 55% in class 12th.  Most of the colleges have same eligibility criteria i.e., the students should have completed 10th and 12th from a recognized board and institute and should have obtained a minimum of 45% at the 10+2 level. However there are some other colleges too where the admission is done on basis of some entrance exams.

For more information regarding the Philosophy course refer the link below,

https://www.careers360.com/courses/philosophy-course

Hope this helps.

Good luck!!!