In a class of 40 students, 60% are girls. The average of the girl’s marks is 72 and that the boys is 54. What are the average marks of the whole class?

In a class of 40 students, 60% are girls. The average of the girl’s

1.	In a class of 40 students, 60% are girls. The average of the girl’s marks is 72 and that the boys is 54. What are the average marks of the whole class?
A.	65.4
B.	64.8
C.	65.2
D.	65
Answer» C. 65.2

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In a class of 40 students, 60% are girls. The average of the girl’s marks is 72 and that the boys is 54. What are the average marks of the whole class?

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