Aditya appeared in a competitive exam in which the final grades are determined by three different exams of 100 marks having weights 20%, 35% and 45%, respectively. If Aditya scored 80, 70 and 60 marks in these exams, respectively, then what is the weighted average score of Aditya?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 67.5
Exam 1→ 80 marks, weight 20% → 80 × 20 = 1600
Exam 2→ 70 marks, weight 35% → 70 × 35 = 2450
Exam 3→ 60 marks, weight 45% → 60 × 45 = 2700
Total weighted marks = 1600 + 2450 + 2700 = 6750
Total weight = 20 + 35 + 45 = 100
Weighted average = 6750 ÷ 100 = 67.5