Dear aspirant !!

Hope you are doing great ! It is easy like if you get let x marks in term 1 then find 30 percent of it by the formula ;-

30×Marks obtained / total marks . Then apply the same thing in term 2 ,just replace 30 by 70 to get 70 percent . Marks obtained = x that we supposed earlier . Now if still you find any difficulty then tell me your marks of both the terms ,i will do it for you , ask me in comment section of this question !

Hope you get it !

Thanks