Mean marks of 60 students of a class are 63 and that of 40 others students are 60. The mean marks of all taken together are

Mean marks of 60 students of a class are 63 and that of 40 others stud

1.	Mean marks of 60 students of a class are 63 and that of 40 others students are 60. The mean marks of all taken together are
A.	61.8
B.	61.5
C.	62
D.	None of the above
Answer» B. 61.5

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Mean marks of 60 students of a class are 63 and that of 40 others students are 60. The mean marks of all taken together are

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