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
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total marks=40*86=3440
let avg marks of 5 student is x;
so,
5*x + (35*85)=3440
5x=3440-2975
x=465/5
x=93;
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Hye !!
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