The maximum marks that can be scored in EAMCET are 160. The weightage of these marks is 75% in EAMCET and the rest 25% weightage goes to marks scored in your 12th. The formula used to calculate this 25% is Your intermediate score*25/600. Then to calculate the actual contribution of your marks to the EAMCET score, multiply by 25 and divide it by 600. In your case it is 485*25/600. That is 20-23 marks approximately.