Dear Naveen, your 10+2 marks have 50% weightage in determining your KCET rank.  KCET is conducted for 180 marks and the subjects score is calculated for 3000. To Calculate the rank, your KCET score and 10+2 score out of 300 will be taken into consideration. For example, if you scored 100 in KCET and 200 in your 10+2, by applying the formula {(%KCET+%PUC)/200}*100, you get your approximate rank. Considering all this, your theory score should be nothing less than 200-240 and your KCET score should be more than 100.