SSC CHSL Model Paper 17

Question : 60 of 100

Marks: +1, -0

In a class of 40 students, 45% are girls and the remaining are boys. If the average of the girls marks is 54 and that of the boys is 46, what is the average of the whole class?

49.8
49.7
49.6
49.5

Validate

Solution:

Total number of students = 40
Number of girls = 45% of 40

={45×40}/100=18

Number of boys = 40 - 18 = 22
Average marks of the whole class

={18×54+22×46}/40 =1984/40

= 49.6

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