In a class of 50 students, 10 have failed and their average of marks is 2.5. The total marks secured by the entire class were 281. Find the average marks of those who have passed?
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The average marks obtained by the passing students is 6.4.
- In a class of 50 students, 10 have failed and their average of marks is 2.5.
- Total marks obtained by the students who have failed is 2.5 × 10 = 25.
- Now the total marks secured by the entire class is 281.
- We have to find the average marks of passing students,
- Total marks secured by passing students = 281 - 25 = 256.
- Now the number of students who have passed = 50 -10 = 40.
- Average marks of students who passed in the exam = 256/40 = 6.4
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