In a class of 70 students, 40% are girls and remaining are boys. The average marks of the boys are 63 and that of the girls are 70. What is the average marks of the whole class?

In a class of 70 students, 40% are girls and remaining are boys. The a

1.	In a class of 70 students, 40% are girls and remaining are boys. The average marks of the boys are 63 and that of the girls are 70. What is the average marks of the whole class?
A.	65.4
B.	65.8
C.	65.2
D.	64.8
Answer» C. 65.2

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In a class of 70 students, 40% are girls and remaining are boys. The average marks of the boys are 63 and that of the girls are 70. What is the average marks of the whole class?

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