Question

in a class test in mathematics 10th students ko 75 marks 12th students ko 60 marks 8 students cos 40 marks and three students course 30 marks find the mean of their score​

Answer 1

Answer:

Total marks obtained by all students :

=10×75+12×60+8×40+3×30

=1880

The total number of students:

=10+12+8+3=33

Average of their score:

=  

33

1880

​

 

=56.96969697

=57   (aproximately)

may it help you

Step-by-step explanation:

Answer 2

Answer:

Correct option is A)

Step-by-step explanation:

Total marks obtained by all students :

=10×75+12×60+8×40+3×30

=1880

The total number of students:

=10+12+8+3=33

Average of their score:

=

33

1880

=56.96969697

=57 (aproximately)