The mean of the marks scored by 12 students of a class is 67.4. If the – McqOptions

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1.	The mean of the marks scored by 12 students of a class is 67.4. If the mean of another class consisting of 15 students is 72.3, find their combined mean?
A.	70.12
B.	69.85
C.	71.23
D.	68.94
Answer» B. 69.85

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