Question

The avg of a class is 39 .The marks obtained by 4 of them are 5,15,12,19 and the avg mark of the remaining class is 44 .find the no of students

Answer 1

Answer:

25 students

Step-by-step explanation:

Let say students = n

Score obtained = 39n

Score of 4 = 5+15+12+19=51

Score of n-4 = 39n-51

Average of n-4 = 44

44(n-4) = 39n-51

5n = 176-51

5n = 125

n = 25

Answer 2

Step-by-step explanation:

refer to the attachment

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