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

Mean marks of 60 students of a class are 63 and that of 40 other stude

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

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

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