If the mean of marks of 25 boys of a class is 42 and the
mean of marks of 15 girls of the same class is 54. Then
the combined mean of whole class is
OPTIONS
46.5
b.
46
45
44
Answers
Answered by
9
Step-by-step explanation:
also
according to above formulae
Accordingly Marks Of Girls=
So
Total marks of girls and boys=
Total students =
Mean mark of whole class =
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