I completed my 10th from Andhra Pradesh State Board, I got 9.8 Grade Points, how to convert it into Marks ? there isn't any conversion card can anyone help here?

I think you can see above the 10th marks box in CAT application that if our board didn't give a policy to convert into percentage then just multiply your cgpa with 10. so your percentage is 98 and marks will be 588. Someone can correct me if I am wrong but up to my knowledge this is what you can do and I did the same even mine is 9.8 in 10th board.