The average marks of 30 students is 65; that of 36 students is 35 and – McqOptions

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1.	The average marks of 30 students is 65; that of 36 students is 35 and that of 34 students is 45. The average marks for all the students is:
A.	46.4
B.	45.3
C.	45.7
D.	47.4
Answer» E.

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