Question
The average marks of a class of 40 students were 75.
When the marks of 5 students were removed, the average marks of the remaining students became 72. What were the average marks of the 5 students whose marks were removed?Solution
Total marks of 40 students = 40 X 75 = 3000 Total marks after 5 students were removed = 35 X 72 = 2520 So, total marks of the 5 removed students = 3000 - 2520 = 480 So, required average = 480 Ă· 5 = 96 marks
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