hi,

The rank list of keam entrance test will be prepared by calculating the average marks secured in KEAM entrance test and class 12 in the ratio of 50:50, however it is really difficult to predict the exact score against the rank since score and ranking chances every year simultaneously , depends on some of the factors like  questions difficulty level, seat matrix, students category. however to secure a decent score you have to make correct answers of 80% of the questions with out attempting wrong answers.

hope it would help.