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Q. The average marks obtained by 40 students of a class is 86. If the 5 highest marks are removed, the average reduces by one mark. The average marks of the top 5 students is
Explanation by: Vaibhav Shukla
The average marks obtained by 40 students of a class = 86 If the 5 highest marks are removed, the average reduces by one mark , then Sum of marks of top 5 students = 40 × 86 – 35 × 85 Sum of marks of top 5 students = 3440 – 2975 = 465 ∴ Their average = 465 ÷ 5 = 93
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