In a class of 50 students, 60% are boys. The average of marks of the boys is 62, and that of the girls is 68. What is the average marks of the whole class?

In a class of 50 students, 60% are boys. The average of marks of the b

1.	In a class of 50 students, 60% are boys. The average of marks of the boys is 62, and that of the girls is 68. What is the average marks of the whole class?
A.	64.4
B.	65.2
C.	64.8
D.	64.6
Answer» B. 65.2

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In a class of 50 students, 60% are boys. The average of marks of the boys is 62, and that of the girls is 68. What is the average marks of the whole class?

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