The average marks obtained in an examination by two groups of students – McqOptions

MCQOPTIONS

1.	The average marks obtained in an examination by two groups of students were found to be 45 and 70. If average marks of all the students were 60, then the ratio of the number of students in two groups is:
A.	2 : 3
B.	3 : 4
C.	4 : 5
D.	5 : 4
Answer» B. 3 : 4

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