Question

The mean marks of 35 students of a class are 40. Find the sum of their marks.

Answer 1

Answer:

Hi friend

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Your answer

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Mean mark obtained by 25 students = 35

Sum of the marks of 25 students = (35 × 25) = 875

Mean mark obtained by 35 students = 25

Sum of maths obtained by 35 students = (35 × 25) = 875

Mean of marks obtained by all the students = (875 + 875)/(25 + 35)

=> 1750/60

=> 29.16

HOPE IT HELPS

Answer 2

Answer:

mean = sum of all marks / no. of students

40 = sum of marks/ 35

sum of marks of students = 35 ×40

= 1400