Multiple choice

In a class test, the average marks were 60. If 20% of the students scored 85 marks and 25% scored 95 marks, what were the average marks of the remaining students in the test?

  1. 35

  2. 25

  3. 20

  4. 32

  5. 45
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Let the total number of students be 100. Total marks = 60 * 100 = 6000. Marks from 20% (20 students) = 20 * 85 = 1700. Marks from 25% (25 students) = 25 * 95 = 2375. Remaining students = 55. Remaining marks = 6000 - 1700 - 2375 = 1925. Average = 1925 / 55 = 35.

AI explanation

Let the total number of students be 100, making the total marks 100 * 60 = 6000. Twenty students scored 85 marks for a total of 1700, and 25 students scored 95 marks for a total of 2375. The remaining 55 students have a combined score of 6000 - (1700 + 2375) = 1925. Their average marks are 1925 / 55 = 35.

Keep practicing — related questions