Hello Saurav,
You need to use simple formula-(sum of marks in all subject)/(sum of total marks in each subject)* 100.
Example-
Physics: 89/100 Maths: 90/100 Chemistry: 85/100 English: 80/100 Hindi:86/100 Physical edu: 95/100
Percentage= (89+90+85+86+95)/(600) * 100
Hope it helped you
Thank you
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