For getting the admission in the medical institutes the candidate must have scored atleast 50% aggregate marks with PCB and these marks will be considered in the merit rank and the rest of the marks are calculated on the basis of NEET. Also there is a formulation to calculate the NEET percentile for the candidate which is ultimately important for the admission. And the merit list be prepared on the basis of the entrnace exam and then the admission will be given as per the merit rank. Go through the link below to know more about the calculation of the NEET marks.

https://www.aakash.ac.in/neet-answer-key-solution/marks-evaluator.html