how to calculate percentage of marks in grade system in kerala?
['Consider A+ 9 point A - 8 and B+ 7 points so and so.', 'Out of 10 subjects you scored 70 points.', 'Pass percentage will be like.', 'Point scored + [no of subjects /20.', 'So, if you scored 70 points.', 'Total pass percentage will be 70 = [10/2] = 75% your official pass percentage.']