To convert a GPA to marks, you need to know:
* The GPA scale: Is it a 4.0 scale, a 5.0 scale, a 10-point scale, or something else?
* The institution's grading system: How are letter grades or grade points translated into percentages or marks at your specific school or university? This information is usually available in a grading rubric or student handbook.
Example:
Let's say a student has a 3.5 GPA on a 4.0 scale at a university where a 3.5 GPA generally corresponds to a 85-90% average. In this case, the "marks" equivalent would be somewhere in that 85-90% range. However, another university might have a different equivalent.
In short, you cannot directly convert a GPA to marks without knowing the specific grading system used by the institution that issued the GPA. You'll need to consult the institution's grading policies.