WAP to calculate a student's result based on 2 exams, 1 sports event, 3 activities. Weightage of exams=50%, sports=20%,activities=30%

[shivajikobardan]

The solution code is like this-:

   ACTIVITIES_WEIGHTAGE=30.0
    SPORTS_WEIGHTAGE=20.0
    EXAMS_WEIGHTAGE=50.0
    
    
    EXAMS_TOTAL=200.0
    ACTIVITIES_TOTAL=60.0
    SPORTS_TOTAL=50.0
    
    exam_score1=int(input("Enter marks in first examinations out of 100"))
    exam_score2=int(input("Enter marks in second examinations out of 100"))
    
    
    sports_score=int(input("Enter marks in sports out of 50"))
    
    activities_score1=int(input("Enter marks in first activity out of 20"))
    activities_score2=int(input("Enter marks in second activity out of 20"))
    activities_score3=int(input("Enter marks in third activity out of 20"))
    
    
    exam_total=exam_score1+exam_score2
    
    activities_total=activities_score1+activities_score2+activities_score3
    
    
    exam_percent=float(exam_total*EXAMS_WEIGHTAGE/EXAMS_TOTAL)
    
    sports_percent=float(sports_score*SPORTS_WEIGHTAGE/SPORTS_TOTAL)
    
    activities_percent=float(activities_total*ACTIVITIES_WEIGHTAGE/ACTIVITIES_TOTAL)
    
    total_percent=exam_percent+sports_percent+activities_percent
    
    print("Total percentage=",total_percent)

I don't understand how we calculated exams_total, activities_total and sports_total here? What was the logic used for that? Do we have any other ways of solving this problem? I know this is too basic question. But I got really confused.

this is the logic that i want to be able to use and that i think is right, but i am not sure how i apply this in program....this looks too confusing for me..
total marks=50% of marks in 2 exams+20% of marks in 1 sports event+30% of marks in 3 activities?