In a mock test conducted by a coaching institute, 20 students average scored 75% marks, and the remaining 15 students average scored 54% marks. Find the average score.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. 66%.
Total students = 20 + 15 = 35
Total marks of 20 students = 20 × 75 = 1500
Total marks of 15 students = 15 × 54 = 810
Total marks = 1500 + 810 = 2310
Average score = = 66%