can i get admission in distance mba course with 45% in bcom

Dear Kanav, you haven't mentioned the Institution that you want to purse your Distance education course from. There are few Institutions that require you to have a 50% aggregatr in your Bachelor's degree while few Institutions need you to just have a Bachelor's degree. One such example is IGNOU. According to their eligibility criteria, a Candidate should have a Bachelor's degree in any discipline from a Recognised University. So you can try for admission in IGNOU. But if you have any other college in mind, please do let us know and we shall help you with their eligibility criteria.