On mixing two classes A and B of students having average marks 25 and – McqOptions

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1.	On mixing two classes A and B of students having average marks 25 and 40 respectively, the overall average obtained is 30. Find the ratio of the students in the class A and B.
A.	2 : 1
B.	5 :8
C.	5 : 6
D.	3 : 4
Answer» B. 5 :8

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