I mean to say when answer key was released I checked out answers and my marks were 60 after negative marking. But in the scorecard my marks are shown 27.5 . So as 50-50 weightage is given to both 12th and entrance marks. Is the scorecard showing 50 percent of marks or it is 27.5 out of 100???

Hey.
These are your marks out of 100 only.
After  you submit the form, a merit list will be released which will combine 50% if your each score and ranks will be given accordingly.
This result is out of 100 only. The score this year has remained on the lower side only.