in post correct mode:

I want to add degree for an open question to the total score( not points ).
Example: test consists of 45 question multiple-choice, in addition to an open question (=degree 5 degrees), and the test 30 degrees.
The program now calculates class like this:
25 points + 5 points = 30 points = 18 degrees.
But I wanted to add a degree of open question (practical test) like this:
25 points = 15 degree + 5 degree = 20 degrees.

regards