The average marks of 30 students in a class were 52. The top six students had an average of 31. What were the average marks of the other students? {Average Marks = 57.25)
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Step-by-step explanation:
Total marks of 30 students = X x N = 52 x 30 = 1560
Total marks of six students
= 31 x 6 = 186
Total marks of 24 students
= 1560 - 186 = 1374 marks
Average marks of students = 1374/24 = 57.25 marks.
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